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text-align: justify; } - table {font-size: .9em; padding: 1.5em .5em 1em; page-break-inside: avoid; - clear: both; } - div.titlepage {text-align: center; page-break-before: always; - page-break-after: always; } - div.titlepage p {text-align: center; text-indent: 0em; font-weight: bold; - line-height: 1.5; margin-top: 3em; } - .ph2 { text-indent: 0em; font-weight: bold; font-size: x-large; margin: .75em auto; - page-break-before: always; } - .right {text-align: right; display: block; margin-left: auto; margin-right: 0em; } - .x-ebookmaker p.dropcap:first-letter { float: left; } -</style> - </head> - <body> -<p style='text-align:center; font-size:1.2em; font-weight:bold'>The Project Gutenberg eBook of A synopsis of the palms of Puerto Rico, by O. F. Cook</p> -<div style='display:block; margin:1em 0'> -This eBook is for the use of anyone anywhere in the United States and -most other parts of the world at no cost and with almost no restrictions -whatsoever. You may copy it, give it away or re-use it under the terms -of the Project Gutenberg License included with this eBook or online -at <a href="https://www.gutenberg.org">www.gutenberg.org</a>. If you -are not located in the United States, you will have to check the laws of the -country where you are located before using this eBook. -</div> - -<p style='display:block; margin-top:1em; margin-bottom:1em; margin-left:2em; text-indent:-2em'>Title: A synopsis of the palms of Puerto Rico</p> -<p style='display:block; margin-top:1em; margin-bottom:0; margin-left:2em; text-indent:-2em'>Author: O. F. Cook</p> -<p style='display:block; text-indent:0; margin:1em 0'>Release Date: January 14, 2023 [eBook #69783]</p> -<p style='display:block; text-indent:0; margin:1em 0'>Language: English</p> - <p style='display:block; margin-top:1em; margin-bottom:0; margin-left:2em; text-indent:-2em; text-align:left'>Produced by: Richard Tonsing and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)</p> -<div style='margin-top:2em; margin-bottom:4em'>*** START OF THE PROJECT GUTENBERG EBOOK A SYNOPSIS OF THE PALMS OF PUERTO RICO ***</div> - -<div class='tnotes covernote'> - -<p class='c000'><strong>Transcriber’s Note:</strong></p> - -<p class='c000'>The cover image was created by the transcriber and is placed in the public domain.</p> - -</div> - -<div class='titlepage'> - -<hr class='c001'> -<div> - <h1 class='c002'>A Synopsis of the Palms of Puerto Rico.</h1> -</div> - -<div class='nf-center-c0'> -<div class='nf-center c003'> - <div><span class='xlarge'><span class='sc'>By</span> O. F. COOK.</span></div> - <div class='c003'>[Reprinted from the <span class='sc'>Bulletin of the Torrey Botanical Club</span>, 28. Oct., 1901.]</div> - </div> -</div> - -<hr class='c004'> - -</div> - -<div class='chapter'> - <span class='pageno' id='Page_525'>525</span> - <h2 class='c005'>A Synopsis of the Palms of Puerto Rico</h2> -</div> - -<div class='nf-center-c0'> -<div class='nf-center c003'> - <div><span class='sc'>By O. F. Cook</span></div> - <div class='c006'>(<span class='sc'>With Plates <a href='#pl_43'>43</a>–48</span>)</div> - </div> -</div> - -<p class='c007'>The following systematic notes have been accumulated in connection -with economic studies of Puerto Rico<a id='r1'></a><a href='#f1' class='c008'><sup>[1]</sup></a> palms, and although -the list is doubtless still incomplete, the printing of it may be justified -as a means of securing at least provisional names needed for -reference purposes in connection with other publications of a non-systematic -character.</p> - -<p class='c009'>The palms may well be considered a very refractory group -when handled by the conventional methods of systematic botany. -Difficult at once to collect or to study from dried material, they -are commonly neglected both in the field and in the herbarium, -with the result that literature is scanty and unsatisfactory. A very -large proportion of the descriptions are entirely inadequate for the -identification of species, and there has been much lawlessness and -diversity in the application of generic names, as will appear from -some of the instances discussed below. Difficulties of description -and classification have also been multiplied by the fact that the -palms are such peculiar plants that analogies and criteria borrowed -from other families are often inapplicable and misleading. Moreover, -the terminology of parts and characters has not been developed -to the point where the expression of observed differences is -easy, and available language often fails completely to suggest -the significance of the characters used. Thus the fibers into which -parts of the leaf-bases of many palms are resolved afford many -<span class='pageno' id='Page_526'>526</span>diagnostic characters, for which we have no parallels in other -groups of plants.</p> - -<p class='c009'>A compensating advantage may be drawn, however, from the -definite and often very limited geographical distribution of the -species of palms. Thus, although Puerto Rico is a relatively -small island, several of the indigenous palms have apparently -ranged in nature over but a small part of it, and a locality definitely -indicated would often go further toward establishing the -identity of a species than much of the descriptive matter prepared -for this purpose. For the present, at least, the geographical idea -should be kept uppermost in systematic studies of the palms, since -it is generally much easier and far more logical to extend the limits -of supposed distribution and unite supposed species, than to cope -with the confusion caused by the miscellaneous reporting of species -far outside their natural ranges.</p> - -<p class='c009'>From the popular standpoint another serious inconvenience of -the systematic literature of palms arises from the fact that it is -based so largely on floral characters that even the botanical traveler -might need to wait months for the blossoms and then climb the -trees or cut them down before being able to secure a clue to botanical -names or relationships. But however necessary refinements of -formal characters may be in presenting classifications or monographs -of large groups, more obvious differences may still be -adequate for distinguishing between the species, genera and families -represented in a limited flora like that of Puerto Rico. In -the present paper use is made therefore of obvious external differences, -not only because of the greater convenience and utility of -such facts in field study but also in the belief that with the palms, -at least, the vegetative, habitat and ecological features are often -quite as important for diagnostic purposes as the more technical and -conventionalized characters to which botanists are accustomed in -dealing with other natural orders.</p> - -<p class='c009'>As will be apparent from some of the following systematic notes, -the generic nomenclature of the palms is in a condition closely -comparable to that now known to obtain among the myxomycetes, -fungi, hepaticae and ferns. Possibly the palms have suffered more -from neglect and carelessness than other groups of flowering plants, -but it can no longer be maintained that the practical defects of -<span class='pageno' id='Page_527'>527</span>former taxonomic methods do not exist in the phanerogams as well -as in the cryptogams, and it becomes obvious that the enactment -of different nomenclatorial legislation for these two subdivisions of -the vegetable kingdom would be unreasonable and inconsistent.</p> - -<p class='c009'>The present list records twenty palms from Puerto Rico, of -which three are introduced and seventeen are supposed to be native -species. As may also be inferred from many other groups of -plants Puerto Rico appears to be a rather remote corner of the -Antillean region, which many types present in Cuba and Jamaica -did not reach, whether by reason of greater distance from the continent -or because of an earlier interruption of land communication. -The native palms of Puerto Rico may thus be said to represent a -distinctly Antillean or Caribbean series, only <i>Acrocomia</i> and <i>Bactris</i> -being known to have a wider distribution.</p> - -<p class='c009'>The list of introduced palms, consisting of the date, the cocoanut, -and the betel, might have been somewhat increased by canvassing -ornamental gardens, but it does not appear that any other introduced -species has been put to any useful purpose or has escaped -into general culture, certainly a remarkable fact when we consider -the number and importance of the economic palms of other tropical -countries.</p> - -<p class='c009'>Finally, it may be well to note here that several palms have -been reported from Puerto Rico which probably do not exist in the -island; at least their occurrence is not supported by adequate evidence. -Thus Mr. R. T. Hill, of the United States Geological -Survey, mentions (Bull. U. S. Dept. Agric., Division of Forestry, 25: -1899) as occurring in Puerto Rico seven palms, as follows: <i>Cocos -Mauritia</i>, <i>Oreodoxa oleracea</i>, <i>Cocos nucifera</i>, <i>Martinezia caryotaefolia</i>, -<i>Mauritia flexuosa</i>, <i>Oreodoxa regia</i>, and <i>Caryota</i> sp., of which -list only <i>Cocos nucifera</i> and <i>Oreodoxa regia</i> appear to have been -justified.</p> - -<p class='c009'>The reference to <i>Oreodoxa oleracea</i> is supported by the botanical -authority of Professor Drude, but the specimens identified by -him as <i>Oreodoxa oleracea</i> (Sintenis collection, no. 1525) and sent -from the Berlin Botanical Garden to the National Herbarium and -to the New York Botanical Garden are not <i>Oreodoxa oleracea</i>, -but belong to the new genus <i>Acrista</i> described below, while a -specimen collected by Sintenis (no. 5749) at Aguadilla and sent -<span class='pageno' id='Page_528'>528</span>out from Berlin as an <i>Attalea</i> or related genus is not even a cocoid -palm but <i>Areca catechu</i>, the betel nut of the Malay region.</p> - -<p class='c009'>The existence of numerous tubercles on the roots of a young -specimen of the royal palm of Puerto Rico is a fact of biological interest -and possible economic importance. It was, however, noted so -nearly at the end of our last visit that further studies were not -practicable, but barring possible nematodes or other pathological -causes for the tubercles it appears that we must add palms to -the Leguminosae, <i>Podocarpus</i>, <i>Alnus</i>, and <i>Cycas</i> as plants which -have, as it were, domesticated nitrogen-collecting soil organisms.</p> - -<p class='c009'>The field notes, specimens and a considerable series of illustrations -for publications of the Department of Agriculture were secured -during two visits to Puerto Rico, the first in November and -December, 1899, the second in June and July, 1901. The photographs -are the work of Mr. G. N. Collins.</p> - -<h3 class='c010'>Key to the Families</h3> - -<p class='c011'>Leaves fan-shaped; branches of inflorescence subtended by spathes.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Family <span class='sc'>Sabalaceae</span>, p. <a href='#Page_529'>529</a>.</div> - </div> - </div> -</div> - -<p class='c013'>Leaves feather-shaped; spathes few, not subtending the branches of the inflorescence.</p> - -<p class='c014'>Leaf-divisions v-shaped in section, concave above; trunk rough with leaf-bases or -prominent diamond shaped scars.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Family <span class='sc'>Phoenicaceae</span>, p. <a href='#Page_528'>528</a>.</div> - </div> - </div> -</div> - -<p class='c014'>Leaf-divisions inverted v-shaped in section, convex above; trunk smooth or the -leaf-scars ring-like and not prominent.</p> - -<p class='c014'>Leaf-bases long-sheathing, green and fleshy, finally split down the side opposite -the midrib permitting the leaf to fall; fruits with fleshy, fibrous or woody -endocarps.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Family <span class='sc'>Arecaceae</span>, p. <a href='#Page_546'>546</a>.</div> - </div> - </div> -</div> - -<p class='c014'>Leaf-bases sheathing only while young, with maturity separating, except at -the midrib, into a dry fibrous network which must tear or decay before -the leaves fall; fruits with a stony endocarp perforated by three foramina.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Family <span class='sc'>Cocaceae</span>, p. <a href='#Page_558'>558</a>.</div> - </div> - </div> -</div> - -<h3 class='c010'>Family PHOENICACEAE</h3> - -<p class='c016'>This family contains a single genus of old-world palms usually -associated with the fan-leaved series, and differing from all other -feather-palms by having the concave side of the leaf segments -turned upward.</p> - -<h3 class='c010'><span class='sc'>Phoenix dactylifera</span> Linn. Sp. Pl. 1188. 1753</h3> - -<p class='c016'>The date palm was probably introduced into Puerto Rico in -the early part of the Spanish occupation of the island, and isolated -trees are to be found in many localities especially in the vicinity of -<span class='pageno' id='Page_529'>529</span>the larger towns. The climate is, however, too cool and too moist -to permit the fruit to ripen properly, and there is apparently no -inducement for planting in large quantities.</p> - -<h3 class='c010'>Family SABALACEAE</h3> - -<p class='c016'>Although forming no conspicuous part of the palm vegetation -of the island the fan-leaved species seem to be more numerous -than those of any other family. It is certain also that further species -remain to be discovered, since in addition to the species listed below, -young inflorescences supposed to belong to a <i>Copernicia</i> were -collected by Sintenis (no. 6512) near Utuado, and he also collected -two other <i>Thrinax</i>-like palms of doubtful identity, one near -Cabo Rojo and one at Fajardo.</p> - -<h4 class='c017'>Key to the Genera of Sabalaceae</h4> - -<p class='c011'>Leaves depressed in the middle, with a distinct decurved midrib; a slender fiber rising -from each of the notches which separate the leaf segments.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Inodes.</span></div> - </div> - </div> -</div> - -<p class='c013'>Leaves flat, midrib rudimentary; segment without alternating fibers.</p> - -<p class='c014'>Leaves chartaceous, naked on both sides when mature, the veinules unequal; fruits -nearly sessile; seeds smooth, albumen solid except for a deep basal cavity.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Thrinax.</span></div> - </div> - </div> -</div> - -<p class='c014'>Leaves tough and coriaceous, the lower surface silvery with a persistent, closely -appressed pubescence; veinules equal; fruits distinctly pedicellate; seeds -deeply grooved or furrowed.</p> - -<p class='c018'>Trunk tapering upward, tall and slender; pedicels short, bracteate at base; -seeds subspherical, ruminate with deep narrow grooves; surface with a dull -membranous cuticle.</p> - -<div class='lg-container-r c019'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Thrincoma.</span></div> - </div> - </div> -</div> - -<p class='c018'>Trunk columnar, of equal diameter or enlarged upward; pedicels long, bracteate -above the base; seed naked, smooth and shining, cerebriform, the surface -irregular with broad furrows and convolutions.</p> - -<div class='lg-container-r c019'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Thringis.</span></div> - </div> - </div> -</div> - -<h4 class='c017'><strong>Inodes</strong> gen. nov.</h4> - -<p class='c016'>In this genus, of which the hat palm of Puerto Rico may be considered -the type, it is proposed to accommodate the dendroid -palms commonly referred to <i>Sabal</i>, the type of which is <i>S. Adansonii</i> -Guersent. The most conspicuous difference between <i>Inodes</i> -and <i>Sabal</i> is, of course, the fact that the former produces an -upright trunk while the latter has only what might be called an -underground rootstock, although such a distinction is quite artificial, -both groups of species beginning life with a creeping axis -which becomes erect in one and remains horizontal in the other. -A much more important difference is to be found in the leaves -<span class='pageno' id='Page_530'>530</span>which in <i>Inodes</i> have secured strength by the development of a -midrib, a tendency early abandoned by <i>Sabal</i> in which the midrib -is rudimentary and the middle of the leaf is the weakest part. The -leaves of <i>Sabal</i> are adapted for standing erect and avoid resistance -to the wind by being split down the middle. The leaves of <i>Inodes</i> -which are held horizontal from an erect axis have attained the -unique adaptation of a decurved midrib which braces the sloping -sides of the leaf and effectively prevents the breaking above the -ligule common in some of the species of <i>Thrinax</i>. It is true that -leaves of young specimens of <i>Inodes</i> stand erect like those of <i>Sabal</i> -and do not have the curved midrib, but even at this stage the midrib -is relatively well developed and the blade opens out to an -almost circular form instead of occupying an arc of 180 degrees -or less as in the more strictly flabellate leaves of <i>Sabal</i>.</p> - -<p class='c009'>Further differential characters might be enumerated, such as the -short ligule and the flat petiole of <i>Sabal</i>. The inflorescence and -seeds also afford differences, but these points are unnecessary for -diagnosis, and their proper expression will require careful comparative -study of the species of both genera, since <i>Sabal</i> is not -monotypic but includes at least two species from the Southern -States and perhaps <i>S. Mexicana</i> Martius. Guersent’s <i>S. Adansonii</i>, -the first binomial species to which the name <i>Sabal</i> was applied, -is, to judge from the figure, the smaller of our species, while -Jacquin’s <i>Corypha minor</i> may be the larger. Both species were -described from hothouse specimens and the plates give no details -really adequate for identification, but if there are but two -species to be considered there can be little doubt that Jacquin’s -drawing represents the larger of the two forms commonly referred -to <i>Sabal Adansonii</i>, since the leaves are nearly four feet long with -the mesial divisions united somewhat less than half way up. The -basal segments are represented, however, as diverging horizontally -and not obliquely as is usual in the living plants in the greenhouses -of the Department of Agriculture.</p> - -<p class='c009'>Guersent maintained that he was dealing with the <i>Sabal</i> which -Adanson had in mind in naming the genus, and made his specific -name in accordance with that fact, treating <i>Corypha minor</i> Jacquin, -<i>Corypha pumila</i> Walter and <i>Chamaerops acaulis</i> Michaux as synonyms. -The relative merits of these names and of <i>Chamaerops -<span class='pageno' id='Page_531'>531</span>glabra</i> Miller, which Dr. Sargent (Silva, <strong>10</strong>: 38) has resurrected, -are not likely to be easy of determination, but since the last was -based on plants grown from seeds which came from Jamaica, it -seems unwise to use it for United States species to which the description -is inapplicable. Miller’s name may, however, replace -<i>Sabal taurina</i> Loddiges which was also founded on a stemless <i>Sabal</i> -supposed to come from Jamaica.</p> - -<p class='c009'>The species of <i>Inodes</i> are in a similar or even worse state of -disorder. There is little use, for example, in transferring to the -new genus the traditional name <i>umbraculifera</i> which was based by -Martius on the <i>Corypha umbraculifera</i> of Jacquin, but not on Linnaeus’ -species of the same name, which is a native of Ceylon. -Present taxonomic methods forbid such generic transfers of misapplied -names, so that the name <strong>Inodes Blackburniana</strong> (<i>Sabal -Blackburniana</i> Glazebrook, Gardener’s Mag. <strong>5</strong>: 52. 1829) should -be used instead of the traditional <i>Sabal umbraculifera</i> of the conservatories, -though the identity and origin of the species still remain -in doubt.</p> - -<h4 class='c017'><strong>Inodes causiarum</strong> sp. nov.</h4> - -<p class='c020'>Trunk 45–75 cm. thick at base, 5–15 m. tall, columnar or -slightly tapering upward; surface narrowly rimose or nearly -smooth, light gray or nearly white. Leaf-bases splitting into rather -brittle fibers, partly remaining compacted into long ribbons 5–8 -cm. wide. Leaves about 4 m. long, the petiole subequal to the -blade, considerably exceeded in length by the inflorescence. Petiole -3.8 cm. wide, distinctly carinate above near the end; ligule 4.2 -cm. in diameter. Fruit grayish, 9–10 mm. in diameter; seed -chestnut-brown, finely rugose or nearly smooth, 7–8 mm. in diameter; -embryo oblique, at an angle of somewhat less than 45 -degrees from the horizontal. Type specimen from Joyua (no. -154).</p> - -<p class='c009'>The palm-leaf hats manufactured in large quantities in Puerto -Rico are made from the present species. The center of the hat -industry is at Joyua, a small village on the western coast of the island -some miles southwest of Mayaguez and west of Cabo Rojo. -Here many hundreds of the palms are growing along the shore in -a narrow belt of coral sand.</p> - -<p class='c009'>From the two species of <i>Sabal</i> recognized by Grisebach <i>Inodes -causiarum</i> differs from <i>umbraculifera</i> in having the inflorescence -<span class='pageno' id='Page_532'>532</span>much longer than the leaves, while the trunk and leaves are much -shorter and thicker than in <i>Sabal mauritiiformis</i> a native of Trinidad -and Venezuela which appears from Karsten’s figure, reproduced -in the Natürlichen Pflanzenfamilien, to have neither the leaves -nor the habit of an <i>Inodes</i> though there is no other genus to -which it can be referred with greater propriety. The diameter of -the trunk of the Trinidad palm described as <i>S. mauritiiformis</i> is -given as from 12 to 15 inches, while <i>I. causiarum</i> is often two feet -or more thick.</p> - -<p class='c009'>From the Florida palmetto, <strong>Inodes Palmetto</strong> (<i>Corypha Palmetto</i> -Walter, Fl. Carol. 119. 1788) the Puerto Rico species differs -most conspicuously in not retaining the old leaf-bases which give -the trunk of the Florida palm so rough an appearance. The -cause of this difference is doubtless to be found in the fact that -as with most other palms the trunk of <i>I. Palmetto</i> grows to full -size while the surrounding leaf-bases are still alive, but in -the West Indian species the trunk tapers greatly, especially in -young trees, and the leaf-bases are torn away by its gradual enlargement -to full diameter. The existence in southern Florida of -an <i>Inodes</i> having this last characteristic is a fact of much interest -recently brought to my attention by Mr. E. A. Schwarz, of the U. -S. Department of Agriculture. The specific distinctness of this -palm was impressed upon Mr. Schwarz, not only by its naked -trunk, different habit, and smaller size (5 m., instead of 10 to 20 m.), -but also by the possession of a distinctly tropical insect fauna, -quite different from that of the more northern palmetto with which -he had previously been familiar.<a id='r2'></a><a href='#f2' class='c008'><sup>[2]</sup></a></p> - -<p class='c009'>This new Florida species it gives me pleasure to name <strong>Inodes -Schwarzii</strong> in honor of its discoverer, in whose opinion of its distinctness -I have great confidence, although he makes no claims -to botanical skill. It is confined, as far as observed by Mr. -Schwarz, to the coral reef formation of southern Florida, the -most accessible station visited being about one mile south of Cocoanut -<span class='pageno' id='Page_533'>533</span>Grove on the coral reef of the mainland side of Biscayne -Bay. In the vicinity of Snapper Creek, <i>Inodes Schwarzii</i> extends -to the Everglades where it is met by <i>I. Palmetto</i>. It was also -seen on the Perrine Grant about six miles from Cocoanut Grove; -it seemed not to occur about Miami but reappeared with the appropriate -formation and attendant fauna at New River, though -again absent at Lake Worth. A photograph secured by Mr. H. -J. Webber (negative 164) on Taby Island near Long Key shows -an <i>Inodes</i> with a naked trunk and a smaller crown of straighter -leaves than are normal for <i>I. palmetto</i>. Messrs. Swingle and -Webber had also remarked the distinctness of the smooth-trunked -palmetto of South Florida.</p> - -<p class='c009'>A third robust species of <i>Inodes</i> is growing in the conservatory -of the Department of Agriculture labeled <i>Sabal umbraculifera</i>. -It differs conspicuously from <i>I. causiarum</i> by the very large leaves -and by the great development of fine brown fibers which fill all -the interstices between the leaf-bases, and suggest the name <strong>Inodes -vestita</strong>.<a id='r3'></a><a href='#f3' class='c008'><sup>[3]</sup></a> Photographs of both the species have been prepared for -the illustration of comparative detailed descriptions.</p> - -<p class='c009'><i>Sabal Mexicana</i> has been reported from Cuba, and as it is described -in Sargent’s Silva (<strong>10</strong>: 43) as having a trunk “often 2½ -feet in diameter,” a robustness equalled only by the Puerto Rico -trees, the question of its identity was examined. It appears that -the original of <i>S. Mexicana</i> came from southern Mexico and is a -trunkless or very slender, rather than a robust species, being only -about 10 cm. in diameter. The berry and the seed are described -<span class='pageno' id='Page_534'>534</span>as closely similar to those of <i>Sabal Adansoni</i>. Sargent’s -<i>S. Mexicana</i> from southern Texas, in addition to the seven times -greater thickness of the trunk, has a seed nearly 1.25 cm. broad -with a strongly prominent micropyle. There can be little doubt -that it is another new species, quite distinct from that of Puerto -Rico, similar only in the unusual diameter of the trunk, which is -furthermore described as bright reddish brown instead of white or -very light grayish as <i>Inodes causiarum</i>. In the view of the apparently -localized distribution of the species of this genus the -name <strong>Inodes Texana</strong> would be appropriate for that described and -figured by Sargent as noted above.</p> - -<p class='c009'>In addition to the recently described <strong>Inodes Uresana</strong> (<i>Sabal -Uresana</i> Trelease, Rep. Mo. Bot. Gard. <strong>12</strong>: 79), there is another -large-seeded <i>Inodes</i> on the western slope of Mexico, a specimen of -which was collected at Acaponeta, State of Tepic (no. 1528) -by Dr. J. N. Rose,<a id='r4'></a><a href='#f4' class='c008'><sup>[4]</sup></a> for whom this species may be named <strong>Inodes -Rosei</strong>. The seeds are of the same size and shape as those of <i>I. -Uresana</i>, but have the surface much more finely rugose, or nearly -smooth, with the embryo directly lateral, not subdorsal. The -branches of the inflorescence are slender and but little over 1 mm. -in diameter instead of fusiform and thickened in the middle to -nearly 3 mm. as shown in Professor Trelease’s photographic illustration.</p> - -<h4 class='c017'>THRINAX Linn. f.; Swartz, Prod. Veg. Ind. Occ. 51. 1788</h4> - -<p class='c016'>In the genus <i>Thrinax</i> were formerly placed all the West Indian -fan-palms with smooth stems and no midribs, but the gradual discovery -<span class='pageno' id='Page_535'>535</span>of numerous and diverse species has resulted in propositions -for subdivision and segregation on the part of several botanists. -As usual these new groups have been characterized very inadequately, -and that mostly from the flowers and seeds, and with -no attempt at establishing correlations of habit or other vegetative -features without which the classification is likely to remain formal -and artificial, as well as useless for popular and field study. Possibly -no ecological differences exist among the <i>Thrinax</i>-like palms -of other regions, but in Puerto Rico there are, as shown in the discussion -of the following genus, two well-defined types, one of -which varies the ordinary short columnar habit by the possession -of a tall slender and flexible trunk which doubtless enables it to -compete in a measure with the rapid growth of the surrounding -vegetation, and which is also obviously adapted for withstanding -the force of the strong winds encountered in the exposed places -apparently preferred by palms of this species.</p> - -<p class='c009'>The type of the genus <i>Thrinax</i> is the Jamaican <i>T. parviflora</i>, a -tree 3 to 6 metres high with the trunk swollen at base. The leaves -are said to be 30–60 cm. long with rigid lanceolate divisions; -the stipes longer than the leaves, terete-compressed. The spadix -is said to be terminal, nearly erect and 60–90 cm. long. The -tree grows in dry maritime situations in Jamaica and Santo -Domingo. It does not appear that the original specimens of this -species have been examined by Sargent or other recent writers, -but it seems reasonable to use the name for the group of short -species with uniform albumen and a basal cavity instead of a complete -perforation. Swartz’s statement regarding the seed “<i>intus -albus, medio ruber</i>,” in connection with its context “<i>nauco osseo -fragile tectus</i>” might possibly be rendered “white inside, red between” -and might refer to the red coat of the seed rather than to -a red center as commonly inferred. Of course Swartz might have -cut his seed transversely, but if so he would doubtless have discovered -and noted the perforation had one existed. Patrick -Brown’s account of the Jamaica species, cited by Swartz, evidently -refers to a palm with the habits of <i>T. Ponceana</i>. On the other hand -the “very slender” palm referred to under this name in the Jamaica -Bulletin (<strong>I</strong>: 196. 1894) shows greater similarity with <i>Thrincoma</i>.</p> - -<div> - <span class='pageno' id='Page_536'>536</span> - <h4 class='c017'><strong>Thrinax praeceps</strong> sp. nov.</h4> -</div> - -<p class='c020'>Trunk 8–12 cm. in diameter at base, columnar or slightly enlarged -upward, seldom attaining over 3 or 4 meters in height. -The leaf-bases split in the middle of the midrib and long remain -adherent to the trunk. When they finally fall away on older -trees a rather rough grayish and longitudinally chinked rimose -surface is exposed.</p> - -<p class='c021'>The stalks of large leaves measure 75–80 cm. in length and -1.2–1.5 cm. in width. The middle divisions of the leaf are 55 cm. -and under in length and attain a width of 4.8 cm., and in the middle -of large leaves are united for more than half their length. -Cross-veinules numerous, distinct in both surfaces but especially the -upper. The white pubescence or tomentum which clothes the young -leaves and is especially abundant on the ligule soon disappears, -leaving the under side glaucous or slightly pruinose.</p> - -<p class='c009'>This species is described at some length a little later in a -comparison of generic characters under <i>Thrincoma alta</i>. The type -specimen (no. 850) was collected on the precipitous mountain-side -which overhangs the road between Utuado and Arecibo, a short -distance to the northward from the station where <i>Thrincoma alta</i> -was obtained.</p> - -<p class='c009'>What is believed to be the same species was collected in a -similar situation on the side of a mountain overlooking the town -and valley of Lares.</p> - -<h4 class='c017'><strong>Thrinax Ponceana</strong> sp. nov. <a href='#pl_43'>Plate 43</a></h4> - -<p class='c020'>Trunk 5–8 cm. or more in diameter, columnar, or slightly -tapering or enlarged upward, 1–4 m. high; surface coarsely and -irregularly rimose longitudinally. Leaf-bases separating into -abundant rather loose light grayish or brownish fibers. Leaves -numerous, large, drooping or pendant; petioles 65 mm. long, -1.5–2 cm. wide; segments attaining 75 cm. in length and 3.5 cm. -in width, united for half their length. Seed smooth, mahogany-brown, -5 mm. in diameter. Type specimen no. 1005.</p> - -<p class='c009'>This species apparently exists in much larger quantities than -any other yet known from Puerto Rico, being the predominant -plant on several square miles of territory along the range of dry -limestone hills which skirt the southern coast of the island, to the -west of Ponce. Many of the palms are scattered among the taller -shrubs and trees wherever there is sufficient soil and water to permit -these to grow and yet not enough to give them exclusive possession, -<span class='pageno' id='Page_537'>537</span>but on many of the drier and more sterile higher slopes -the advantage is with the palms.</p> - -<p class='c009'>This abundance of living material deserves more careful -study than could be given during a very brief visit to this almost -uninhabited part of the island, but one note of systematic -interest was made. Several species of <i>Thrinax</i>, of which <i>T. Morrisii</i> -Wendland may serve as an example, have been described -chiefly with reference to the relative size of the leaf segments and -the extent of their separation. If the palms under observation -near Ponce belonged, as was believed, all to one species, it is not -only true that the individual <i>Thrinax</i> passes all the stages from -the narrow and grass-like, almost completely separated segments -of the very young plant, to the more than half united leaf of the -large tree, but it also appears to be true that under unfavorable -conditions a <i>Thrinax</i> may not be able to attain to full maturity of -size and form but may at the same time produce flowers and seeds. -In the narrow chinks and crevices of the bare rocks were very -small, stunted trees, obviously of great age, while but a few feet -distant a deeper fissure might hold vegetable débris and moisture -sufficient to nourish vigorous specimens several times the size of -their less fortunate companions. The stunted trees retain in proportion -to their size, but apparently with little reference to their -age, the small deeply divided leaves of young plants and have -short few-branched inflorescences, another difference of supposed -systematic importance.</p> - -<p class='c009'>In <i>Thrinax Ponceana</i> the leaves of well grown trees have the -middle divisions united to about the middle; the smaller the leaves, -the more deeply they are divided. A further correlation with size -is that of the “fullness” of the leaf. The basal sinus is not closed -by the overlapping of the lateral divisions as in some species, but -the area is too great for a plane circle and there are one or more -folds, more numerous and deeper in large leaves. The lateral -divisions do not lie in the plane of the others but project upward -or backward nearly at right angles with the plane of the middle -divisions.</p> - -<p class='c009'>The middle divisions of large leaves may measure 75 cm. in -length by 3.5 and sometimes nearly 4 cm. in width, while the narrowly -grass-like lateral segment is only .8 cm. wide and about 30 -<span class='pageno' id='Page_538'>538</span>cm. long. The lowest segment is not divided at the tip but is produced -into a slender hair-like seta, 6 or 8 cm. long, making it nearly -as long or longer than the next segment above.</p> - -<p class='c009'>The normal segments are split at the apex to the distance of -from 2 to 8 cm. and the tips are usually markedly divaricate, -owing to the fact that the young leaves of this species suffer two -impressions from the bases of older leaves, one near the middle, -the other near the end. The pressure causes the curvature of the -unopened leaves, which in turn causes them to split apart when -the leaf expands.</p> - -<p class='c009'>Old leaves are smooth and glaucous on the lower side, but in -the younger state more or less remains of the delicate appressed -hairiness present on the lower surfaces of the newly opened leaves. -The lower surface is distinctly grayish and glaucous, but under a -lens it can be seen that this appearance is due to the presence of -numerous whitish points (stomata?) among which are scattering -brownish spots of larger size, the nature of which remains a question.</p> - -<p class='c009'>The free stalks of the largest leaves attain 65 cm. in length -and are 2 cm. wide near the base, 1.5 cm. near the apex. The -cross section is lenticular above, but the upper surface becomes -flat toward the base.</p> - -<p class='c009'>Young unopened leaves are covered near the base, both above -and below, with a scurfy white tomentum and the margin of the -ligule has a long white fringe.</p> - -<p class='c009'>To avoid possible error it seems best to make separate entry -of the following notes on specimens which might be considered -quite distinct from the larger and normally mature form of <i>Ponceana</i>, -but which represent, it is believed, merely a somewhat depauperate -condition of that species, although leaves exactly comparable -were not brought home by our party. The specimens in question -were collected by Sintenis (no. 3500) on the south coast of the -island near Guanica and distributed from Berlin as “<i>Thrinax</i> -n. sp.”</p> - -<p class='c009'>The leaves are characterized by the narrow straight-sided segments -which retain the same width (15 mm. or less) for about 11 -cm.; they are united in the middle of the leaf for about 8 cm. and -the apical tapering part is about the same length. Other species, -<span class='pageno' id='Page_539'>539</span>so far as known, have the segments much broader, both absolutely -and relatively, and the width is held for a very much smaller proportion -of the length.</p> - -<p class='c009'>In addition the midrib is unusually weak, inconspicuous and -only slightly prominent on the lower side. The small fibro-vascular -bundles which compose it are sometimes spread apart so that -there is scarcely an indication of a rib while in other segments of -the same leaf, and especially at the base, the conditions are more -normal. The midrib is sufficiently distinct above, though very -small and fine in comparison with other species.</p> - -<p class='c009'>Lower surface of leaf glabrous or somewhat glaucous, very -slightly puberulous on the depressed veins near the base. Veinlets -inconspicuous, mostly subequal, though 4 or 5 are sometimes -a little larger than the others. Transverse veinlets indistinct below.</p> - -<p class='c009'>Petiole slender, 4 mm. wide, lenticular in cross section; about -2 mm. thick. Ligule small and weak, short, with a small apical -mucro.</p> - -<p class='c009'>Fruits 5 mm. in diameter, olive brown, irregularly rugose-coriaceous -on the outside as though dried from a pulpy condition; -exocarp with a slightly sweetish taste. Seed bright mahogany-brown, -darker below, depressed-globose, with a sublateral raphe; -embryo ascending but more nearly lateral than vertical; conical -basal cavity extending somewhat above the center, nearly filled -with a deep red material.</p> - -<p class='c009'>At the time of our visit in July no ripe fruits of <i>T. Ponceana</i> -were found on the trees, but a few picked up from the ground are -apparently indistinguishable from those of Sintenis’ specimen.</p> - -<h4 class='c017'><strong>Thrincoma</strong> gen. nov.</h4> - -<p class='c020'>Trunk slender, tapering, flexible; wood firm, covered by a -smooth hard brittle outer shell or bark.</p> - -<p class='c021'>Leaf-bases long-sheathing, expanded by the separation of the -fibers of the side opposite the midrib; petiole strongly flattened -above the base, prominently angled above and below; ligule large -and firm, produced laterally to support the outer divisions.</p> - -<p class='c021'>Leaf-divisions narrow, separated below the middle and below -the point of greatest width; texture firm and coriaceous; veinules -subequal, close together, cross-veinules obsolete. Lower surface -clothed with persistent closely appressed hairs, the upper coated -with wax when young.</p> - -<p class='c021'><span class='pageno' id='Page_540'>540</span>Seeds with few longitudinal grooves, the surface not polished, -grayish; embryo subapical.</p> - -<p class='c009'>The generic name alludes to the preference of this palm for the -summits of crags and the brows of perpendicular cliffs which abound -in the limestone region of the north side of Puerto Rico.</p> - -<p class='c009'>The tall, slender trunk and other differences between this genus -and <i>Thrinax</i> are probably to be interpreted as ecological adaptations -necessary to enable the present palm to compete with the -vegetation which often surrounds its base, and to withstand the -winds to which it is commonly exposed. The species of <i>Thrinax</i> -and other allied genera, as far as known, have the trunk rigid and -columnar, or even enlarged from the base upwards. When growing -solitary and exposed they seldom, if ever, attain half the height -of <i>Thrincoma</i>. Usually, however, they are protected by other -vegetation or by growing gregariously in thickets.</p> - -<p class='c009'><i>Thrincoma</i> might be described as a <i>Thrinax</i> which has adopted -habits of the arecoid genus <i>Acria</i> which grows in similar situations -in a neighboring part of the island. In addition to the smooth, -slender, and flexible trunk <i>Thrincoma</i> makes further provision -against the wind in having fewer, less ample, tougher and more -deeply divided leaves and like the arecoid palms it also drops the -old leaves as soon as their usefulness is past, instead of retaining, -like <i>Thrinax</i>, a large pendant cluster of them. The details of these -differences are given below in a comparative note on fresh material -of <i>Thrincoma alta</i> and <i>Thrinax praeceps</i> collected but a short distance -apart in the lower part of the Arecibo valley along the -Utuado-Arecibo road. In this region of jagged mountains, <i>Thrinax</i> -seeks shelter against the walls of perpendicular precipices, while -<i>Thrincoma</i> challenges the wind and the admiration of the traveller -by its evident preference for the crags and pinnacles.</p> - -<h4 class='c017'><strong>Thrincoma alta</strong> sp. nov.</h4> - -<p class='c016'>With but one species known with certainty to belong to the -present genus the separation of generic and specific characters -would have little purpose. Data for a specific description are, -however, contained in the following notes which are retained in -their original comparative form as better illustrating the generic -differentiation of <i>Thrincoma</i> and <i>Thrinax</i>, as represented by -<i>Thrinax praeceps</i>.</p> - -<p class='c009'><span class='pageno' id='Page_541'>541</span>The trunk of <i>Thrincoma</i> differs in three adaptive particulars -from that of <i>Thrinax praeceps</i>, <i>Ponceana</i> and similar species which -are merely columnar with very short internodes and an irregularly -rimose surface, not smooth and hardened.</p> - -<p class='c009'>1. There are distinct internodes from 3.5 to 5 cm. in length. -These indicate rapid growth and would increase the chances of survival -in the face of competition of quick-growing tropical vegetation.</p> - -<p class='c009'>2. The trunk tapers gradually from a diameter of 9 cm. near -the base to 3.5 at the top, and thus possesses considerable flexibility -in view of its great length, 11 meters, <i>Thrinax praeceps</i> and other -related types not exceeding 4 or 5 meters.</p> - -<p class='c009'>3. In order to support the weight and strain of this greater -height, the texture of the wood is extremely hard and firm, especially -near the base of the trunk. Externally it is covered by a -smooth shell or bark of very hard, brittle, dark colored material. -The fibers of the interior which in <i>Thrinax</i> are merely imbedded -in a soft pith like those of a corn-stalk are here thickened and -cemented together, as in tall palms of other groups, into a dense -hard wood. In the specimen cut by us all but a small area of the -middle of the trunk was thus hardened, rendering it extremely -heavy. The wood-fibers of <i>Thrincoma</i> are much coarser than -those of <i>Thrinax</i>, and there appear to be none of the obliquely -radial threads which are abundant in the wood of <i>Thrinax Ponceana</i>.</p> - -<p class='c009'>With reference to methods of leaf-attachment four differences -may be noted:</p> - -<p class='c009'>1. In <i>Thrinax praeceps</i> the leaf-bases split below in the median -line and remain long attached to the trunk. This adaptation is not -confined to the old leaves but appears while the leaves are still very -young, or as soon as they begin to be expanded by the pressure -of those above them. In the tall species such pressure separates -the fibers of the opposite side of the cylinder. The short species -has the outside of the leaf-bases densely tomentose, and the tomentum -is especially abundant along the edges of the split midrib of -the young leaf.</p> - -<p class='c009'>2. The ligule of <i>Thrincoma</i> is notably larger than that of -<i>Thrinax</i> and continues to lie in the same plane as the blade, and -<span class='pageno' id='Page_542'>542</span>becomes brown with maturity. In old leaves of <i>Thrinax</i> the ligule -stands nearly at a right angle to the blade and remains green.</p> - -<p class='c009'>3. For leaves of the same size the petioles, not including the -sheathing base, are longer (75–80 cm.) in the short than in the tall -species (60–65 cm.).</p> - -<p class='c009'>The petiole of the short species is of nearly the same width -(1.2–1.5 cm.) throughout, while in the other it is distinctly broader -at both ends than in the middle. The enlargement at the ligule is -abrupt. The base widens gradually to about 2 cm. but is much -thinner than in the short species. In the upper part of the petiole -the reverse is true, the cross section of the leaf-stalk of the <i>Thrincoma</i> -being almost diamond-shape, while that of <i>Thrinax</i> is merely -lenticular.</p> - -<p class='c009'>4. These differences of proportion of ligule and stalk are obviously -correlated with the different habits of the two species. The -shorter and more robust trunk of the one enables it to withstand -the strain of the relatively limited exposure to the wind. There is -also a greater flexibility in the leaf itself, due to its thinner texture -and to the smaller development of the ligule and adjacent thickened -area, so that the leaves are often split to near the center. The -narrow petiole of the tall species affords greater flexibility in the -lateral plane while strength has been secured by the greater thickness. -On the other hand the thinness of the base of the petiole -of <i>Thrincoma</i> reduces resistance by permitting the petiole to be -twisted when the leaf is opposed to the wind or blown laterally, -thus avoiding the strain which would come upon the more rigid -base of the petiole in <i>Thrinax</i>.</p> - -<p class='c009'>The more salient differences between the leaf-blades of the two -species may be enumerated as follows:</p> - -<p class='c009'>1. Although the length of the middle segments of the leaves -of <i>Thrincoma</i> are longer (62 cm.) than those of the other (55 cm.) -the apparent size of the latter is much greater because they are -fully expanded while those of <i>Thrincoma</i> remain more or less fan-shaped, -generally opening less than a semicircle. This decreases -the lateral expansion, since the shortest divisions are brought to -the sides, and gives no projection below the ligule where in -<i>Thrinax</i> more than one third of the foliar expanse is located.</p> - -<p class='c009'>2. The leaf segments are much narrower (3.6 cm.) in the tall -than in the short species (4.8 cm.).</p> - -<p class='c009'><span class='pageno' id='Page_543'>543</span>3. Practically the difference in width is still greater because the -segments of <i>Thrincoma</i> are never fully expanded but remain deeply -channelled, thus decreasing the area of exposure to the wind and -increasing the rigidity of the leaf.</p> - -<p class='c009'>4. Resistance to the wind is also reduced in the tall species by -the separation of all the segments to more than two-thirds their -length, while in <i>Thrinax praeceps</i> the median segments are united -more than half way up. In the latter, as in the other members of -the group, the separation begins at the point of greatest width of -the segment, but as if to show that the deeply divided leaves of -<i>Thrincoma</i> are an adaptation, the greatest width is located near the -longitudinal middle of the segments, 10 cm. or more above the -bottom of the cleft.</p> - -<p class='c009'>5. The texture of the leaf of <i>Thrincoma</i> is thicker and firmer -so that the segments generally remain straight to the tips while -in <i>Thrinax</i> they often droop after the leaves have become fully expanded.</p> - -<p class='c009'>6. The color of the leaves of the tall palm is a very dark green -while those of <i>Thrinax praeceps</i> are uniformly of a much lighter, -fresher tint.</p> - -<p class='c009'>7. The veinules of the firm leaves of <i>Thrincoma</i> are more -numerous and closer together than those of <i>Thrinax</i>.</p> - -<p class='c009'>8. The veinules are also subequal in size, giving an appearance -of uniform pattern, while in <i>Thrinax praeceps</i> from 3 to 5 of -the veinules of each side of the midrib are distinctly larger than -the others, the larger veinlets being separated by from 3 to 10 -smaller ones.</p> - -<p class='c009'>9. In <i>Thrincoma</i> the cross-veinules are scarcely visible to the -naked eye; under a lens they are still obscure, never equalling in -size the smaller of the longitudinal veinules, which they seldom -appear to cross. In <i>Thrinax praeceps</i>, on the contrary, the cross-veinules -are as large as the finer longitudinal ones; they are obvious -without a lens and give the fabric of the leaf a peculiar marbled -effect on account of the fact that they are generally oblique or -wavy and commonly appear to cross several of the longitudinal -veinules.</p> - -<p class='c009'>10. The margins of the segments are thickened in both -species, and on the upper side there is a groove inside the marginal -<span class='pageno' id='Page_544'>544</span>rib. In the short species the margin is flat below and does -not become decurved in drying. In the other the thin edge is -closely folded under, and on drying the sides of the segments uniformly -roll under, giving the dried leaves of the two species an -appearance even more dissimilar than in the fresh state.</p> - -<p class='c009'>11. The lower surface of the leaf of <i>Thrincoma</i> has a silvery -white layer of fine closely appressed hairs, all lying parallel to the -veins and forming a continuous covering. The fibers seem not to -be attached merely at one end, but along the side. They are firmly -adherent and are to be removed only by scraping or rubbing; the -surface underneath is deep green like the upper side, but the fibers -remain in the grooves between the veins. In <i>Thrinax praeceps</i> the -lower surface of mature leaves is smooth and glaucous, a comparatively -very slight hairy covering present in young leaves being -evanescent, though traces of it are usually to be found in the deeper -basal grooves. The glaucous appearance is due to the presence -of numerous white or hyaline points arranged in rows (stomata?). -The hairiness of one leaf and the glaucous character of the other -are probably to be looked upon as different adaptations for the -same purpose—the reduction of transpiration.</p> - -<p class='c009'>12. The upper surface and the ligule of young leaves of <i>Thrincoma</i> -are covered with a layer of wax in the form of small plates -or scales not present in <i>Thrinax</i>.</p> - -<h4 class='c017'><strong>Thringis</strong> gen. nov.</h4> - -<p class='c020'>Trunk columnar, rimose; wood pithy. Leaves coriaceous -with equal veinules, silvery below with closely appressed whitish -pubescence. Fruits distinctly pedicellate, the pedicel with a bract -above the base. Seed cerebriform, irregular, with wide furrows -and convolutions; surface smooth and shining. Embryo subapical.</p> - -<p class='c009'>The characters of this genus are imperfectly known, none of -the specimens being complete. Supposing however, that the association -is a natural one, we have a genus with leaves and pedicellate -fruits much more similar to those of <i>Thrincoma</i> than to -those of <i>Thrinax</i>, and at the same time a columnar, rimose and -pithy trunk like that of <i>Thrinax</i> and <i>Coccothrinax</i>. The seeds -appear to differ from those of all related genera in the possession -of large irregular convolutions. The coriaceous leaves, small -<span class='pageno' id='Page_545'>545</span>fruits, subapical embryo, and other differences separate this genus -from <i>Coccothrinax</i>.</p> - -<h4 class='c017'><strong>Thringis laxa</strong> sp. nov.</h4> - -<p class='c020'>The trunk is columnar or somewhat enlarged upward, about -3.6 m. high and 12 cm. in diameter. Surrounding its base was -a dense turf of fine upright rootlets. The bark was rough and -rimose.</p> - -<p class='c021'>The leaves are similar to those of <i>T. latifrons</i>, but smaller, the -segments being about 70 cm. long by 33 mm. wide. The size of -leaves is thus about the same as those of <i>Thrincoma alta</i>, but the -texture is thin and flexible, the veinules being slender and not -prominent on either side. The pubescence is much thinner than -that of <i>T. alta</i> and of a silvery-gray color.</p> - -<p class='c009'>A palm collected in December, 1899, at Vega Baja, but without -fruit (no. 1041). The habit and trunk are not those of <i>Thrincoma</i>, -but the form and texture of the leaves and ligule associate the -species with <i>Thrincoma alta</i> rather than with the palms here -placed in <i>Thrinax</i>.</p> - -<p class='c009'>The columnar habit and protected habitat are reflected in the -small ligule, 18 mm. across, and the relatively broad petiole, 13 -mm. wide. It appears from the dried specimens of this species -and <i>T. latifrons</i> that the leaves may have been “full,” or irregularly -folded, instead of strictly and equally expanded as in <i>Thrincoma -alta</i>, and the greater width of the segments is a further -indication of this possibility. The rigidity of the leaf of <i>Thrincoma -alta</i> can be maintained because the segments are narrow and do -not open widely.</p> - -<p class='c009'>The soft texture of the leaves of this palm is recognized by -the natives who use it for making hats and call it “yaray” the -same name which is applied in this part of the island to <i>Inodes -causiarum</i>.</p> - -<h4 class='c017'><strong>Thringis latifrons</strong> sp. nov.</h4> - -<p class='c016'>The leaves, inflorescence and young plants of a palm collected -by Sintenis (no. 3278) on Monte Calabaza near Coamo are much -larger and coarser than those of <i>Thrincoma alta</i>. The total length -of the middle segments of the leaf would be over a meter, and the -width of the larger divisions is over 5 cm. The thickness of the -petiole at the base of the ligule is over 10 mm. The form of the -<span class='pageno' id='Page_546'>546</span>ligule is much like that of <i>Thrincoma alta</i>, though scarcely as -large in proportion to the size of the leaf.</p> - -<p class='c009'>The lower surface is clothed with a satiny, appressed grayish -pubescence somewhat less pronounced than that of <i>Thrincoma alta</i>. -As in that species the veinules are of equal size, but they are more -widely separated, and the wavy and usually somewhat oblique -transverse veinules are easily distinguishable on both sides of the -dried leaf. There are also slight traces of wax on the ligule and -in the grooves of the upper surface. The median divisions are -united for distinctly more than one-third their length.</p> - -<p class='c009'>The spathes and spadix are distinctly larger than those of -<i>Thrincoma alta</i>, but the fruits are, unfortunately, quite immature -and contain only shriveled seeds. The pedicels of the fruits are -2–4 mm. long and bear, usually near the middle, a very slender -bract 1–2 mm. long.</p> - -<p class='c009'>This species is apparently distinct from <i>Thringis laxa</i> in the -larger size and firmer texture of the leaves. It differs in the longer -pedicels of the fruits, with their longer and more slender bracts, -from a specimen belonging to the New York Botanical Garden and -supposed to have been collected by Mr. A. A. Heller, though the -number (3278) indicates that it may belong to the Sintenis series.</p> - -<p class='c009'>This consists of a single, short, once-branched inflorescence -arising from two fibrous spathes. The fruits are about 4 mm. in -diameter, nearly spherical, distinctly apiculate, deep reddish brown -in color and borne on pedicels 2–3 mm. long, with a bract 1 mm. -long or less at or below the middle. The seeds are 2–2.5 mm. in -diameter; the surface is smooth and shining and light brown in -color; general shape spherical but with deep folds and convolutions.</p> - -<p class='c009'>No leaves are known in connection with this specimen, and the -exact locality is also in doubt. Mr. Heller believes, however, -that the inflorescence came from a small <i>Thrinax</i>-like palm growing -in the limestone hills a few miles to the east of San Juan.</p> - -<h3 class='c010'>Family ARECACEAE</h3> - -<p class='c016'>A large family, with abundant genera in the tropics of America -and Asia, but absent from tropical Africa. The Puerto Rico -representatives may be recognized very easily by the fact that the -<span class='pageno' id='Page_547'>547</span>leaf crown is supported upon a column of the sheathing bases, a -character of which the royal palm furnishes a conspicuous and -ever-present example. Of the remaining genera, one, the betel -palm of the East Indies is sparingly introduced about towns in the -western part of the island and may be recognized at a glance by -reason of the extremely dark green of its foliage. The other two -genera are native palms confined to uncultivated areas and thus -seldom seen at close range from traveled roads. The mountain -palm, <i>Acrista</i>, covers the summits of many of the mountains of -the island, but <i>Aeria</i> seems to be confined to the range of high -limestone crags which skirt the northern coast of the island between -Bayamon and Arecibo.</p> - -<h4 class='c017'>Key to the Genera of Arecaceae</h4> - -<p class='c011'>Trunk tall and slender, tapering from a swollen base; spathes numerous (7); inflorescence -appearing in the axis of the rather persistent lower leaves, long and slender; -staminate flowers arranged in rows.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Aeria.</span></div> - </div> - </div> -</div> - -<p class='c013'>Trunk robust or of uniform diameter; spathes 1 or 2; inflorescence short and brush-like, -not exposed until the enclosing leaf below it falls away; flowers not set in rows.</p> - -<p class='c014'>Spathe single, the fruits 2.5 cm. long; leaf-divisions upright, very dark green.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Areca.</span></div> - </div> - </div> -</div> - -<p class='c014'>Spathes 2, fruits less than 1.25 cm. long; leaf-divisions horizontal or oblique.</p> - -<p class='c018'>Trunk robust, thickened near the middle; leaf-divisions inserted by twos and -standing at different angles; inflorescence twice or thrice branched, standing -close to the leaf-bases.</p> - -<div class='lg-container-r c019'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Roystonea.</span></div> - </div> - </div> -</div> - -<p class='c018'>Trunk slender, of uniform diameter; leaf-divisions at equal distances, horizontal; -inflorescence once-branched, at maturity 15 cm. or more below the -leaf-bases.</p> - -<div class='lg-container-r c019'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Acrista.</span></div> - </div> - </div> -</div> - -<h4 class='c017'><strong>Aeria</strong> gen. nov.</h4> - -<p class='c016'>A tall slender palm evidently related to <i>Gaussia</i>, but the embryo -lateral instead of basal, and the pinnae without basal cushions.</p> - -<p class='c009'>Among palms in Puerto Rico <i>Aeria</i> resembles only <i>Acrista</i>, -from which it is readily distinguishable by the very slender habit, -the swollen base of the trunk, the much-branched slender interfoliar -inflorescence, the shorter sheathing bases of the leaves, and -the numerous spathes.</p> - -<p class='c009'>The embryo of <i>Aeria</i> is located near the longitudinal middle -of the seed on the side opposite the rudiment of the style, which -is here located at the base of the fruit instead of on the side as in -<i>Acrista</i>. The albumen is also uniform, except for a small central -cavity and the outer covering is fleshy rather than fibrous.</p> - -<p class='c009'><span class='pageno' id='Page_548'>548</span>The position of the embryo is, perhaps, the most obvious difference -between this genus and <i>Gaussia</i>, but there are several -other significant discrepancies. Thus the flowers are arranged 3 -or 4 in a row, very seldom 5 or 6. Three fruits develop from one -flower only exceptionally. The trunk is of more than medium -height, and the inflorescence is in reality infrafoliar, for although -the dead leaf-bases and midribs of the leaves are persistent and -support the long inflorescence, this condition is not comparable to -that of the cocoid and other really interfoliar inflorescences.</p> - -<h4 class='c017'><strong>Aeria attenuata</strong> sp. nov. <a href='#pl_45'>Plate 45.</a></h4> - -<p class='c016'>The tallest of Puerto Rico palms, probably attaining 30 metres -and upward. The trunk is supported on a mass of coarse roots -with spine-like projecting rootlets arranged in whorls. The surface -of the trunk is smooth with very faint annular impressions. -Near the ground the diameter is 12 to 15 cm. and increases upward -to about 25 cm. at about 3 m. above the base. Above -this swelling the trunk tapers very gradually and in tall specimens -is less than 7 cm. in diameter at the top.</p> - -<p class='c009'>The sheathing leaf-base is only 20 cm. long. The leaves remain -attached long after the rupture of the open side, but no fibers -are formed, the edges of the split side being fringed only with -brown membranous shreds. The petiole is rather short, round -and rigid and the rachis is prominently angled above.</p> - -<p class='c009'>Segments of a rather firm texture and standing in different -planes, but all more or less upright or oblique to the rachis, segments -from middle of leaf 2.3 cm. wide near the base, 3.8 cm. -long. The segments are set very closely together, especially the -proximal, and overlap each other in a succubous manner. Fresh -fruits deep orange in color and of an unsymmetrical oval in shape, -16 mm. by 12 mm., with a firm, fleshy outer covering 1.6 mm. thick, -adherent to the seed, the three persistent styles remain of the -same size and are located at the base of the fruit.</p> - -<p class='c009'>The seed is flattened oval, 11 mm. by 9 mm., with a prominent -basal tubercle (hilum). The surface is brownish with a few -shallow impressed lines, but the albumen is white and uniform. -Flowers and ripe fruit were obtained at Vega Baja in December, -1899; type specimen no. 1040.</p> - -<p class='c009'><span class='pageno' id='Page_549'>549</span>The so-called llume palm is a most striking ornament of the -rugged limestone hills from Vega Baja to Manati and Arecibo. -At a sufficient distance the slender trunk is no longer visible -and the crown of leaves appears as if suspended in mid-air, while -at closer range it does not seem possible that so slender a shaft -can maintain itself. This very slenderness with the attending flexibility -is however, an element of strength since it permits the trees -to bend before the wind while the leaves diminish the resistance -by straightening out as in the cocoanut. The hurricane of August, -1899, seemed to have done little damage to these tallest of -Puerto Rico palms, many of which project for more than half -their height above everything standing about them. As the trees -of the rather sparse forest growth of these hills are commonly -from 12 to 18 metres tall, the llume palms must often attain upwards -of 30 metres.</p> - -<h4 class='c017'><span class='sc'>Areca Catechu</span> Linn. Sp. Pl. 1189. 1753</h4> - -<p class='c016'>In the western end of the island the betel palm of the Malay -region has been sparingly introduced, though the fact does not -seem to have been reported hitherto. A few were seen in gardens -about Mayaguez and others in and near San Sebastian. So far -as we were able to learn, the people do not know the name or nature -of this introduced species which is apparently planted only as -an ornament or a curiosity. The form is not unpleasing, but the -extremely deep, sombre green of the foliage seems almost unnatural -and imparts a suggestion of artificiality.</p> - -<p class='c009'>Only photographs and fruits of <i>Areca</i> were secured at San -Sebastian, but Puerto Rico specimens collected by Sintenis (no -5749) at Aguadilla have already been distributed from the Berlin -Botanical Garden with the label “Palma Spec. Subtrib. Attaleae.”</p> - -<h4 class='c017'>ROYSTONEA Cook, Science, II. <strong>12</strong>: 479. 1900</h4> - -<p class='c016'><i>Oreodoxa</i> Martius and more recent authors, not Willdenow.</p> - -<p class='c009'>The history of the generic name <i>Oreodoxa</i> shows that botanical -writers of the last few decades have been in error in removing the -two original species and applying it to another series of similar but -not closely related forms. To avoid further confusion with reference -to a name which by reason of the conspicuous character of -<span class='pageno' id='Page_550'>550</span>the trees has wide use in popular literature it seems desirable to -add the following notes on the genus <i>Oreodoxa</i> as originally established -by Willdenow in the Memoires de l’Academie Royale, Berlin, -1804, a publication which seems to have been consulted very -seldom, even by writers on palms.</p> - -<p class='c009'>Spathe universal, univalvate; spadix ramose, perianth monophyllous, -tripartite below, the divisions ovate, acute, concave; -petals ovate, acuminate, concave. Filaments six, of the length of -the corolla; anthers oblong, acute. Style tripartite, shorter than -the filaments, stigma acute. Ovule, drupe, and seed globose; -drupe succulent, but slightly fibrous; seed single, cartilaginous, -nearly smooth, marked with a longitudinal sulcus. In the discussion -subsequent to the statement of the above characters, <i>Oreodoxa</i> -is said to be distinct from <i>Bactris</i> in the tripartite style and in the -absence of the “ordinary three impressions”; it is distinguished -from <i>Areca</i>, then supposed to include <i>Euterpe</i> and species now generally -placed in <i>Oreodoxa</i>, in the single spathe, the triple style and -the hermaphrodite flowers.</p> - -<p class='c009'>The first species is <i>Oreodoxa acuminata</i>, referred by recent -authors to <i>Euterpe</i> but probably constituting a distinct genus. The -trunk is erect, cylindrical, very smooth, and attains a height of -from 15 to 18 metres; the “root” throws out suckers at the base -of the trunk. The fronds are pinnate, with opposite or alternate, -very long, ensiform, acuminate pinnae, replicate at base. The -strongly convolute young leaves form a green apex for the trunk, -five feet high. Spathes cinereous, folded in at the base of the -leaf-sheaths at the top of the trunk, univalvate, deciduous; spadix -erect, much branched, having the appearance of a broom.</p> - -<p class='c009'>The heart of the bundle of leaf-bases, about two feet long and -three inches thick is eaten as a salad, with oil and vinegar. It is -also stated that the deciduous boat-shaped spathes serve as reservoirs -of rain-water which is long retained in the cool shade cast -by the trees. Birds and beasts, and human natives as well, are -said to be dependent at times upon the liquid thus stored, since in -the regions where the palm grows there are at times no other means -of procuring water. The forests of the high mountain chain of -Buena Vista in the province of Caracas are the native home of the -species. It thus appears that in addition to the structural differences -<span class='pageno' id='Page_551'>551</span><i>Oreodoxa acuminata</i> occupies quite a different place in nature -from that of the more thoroughly tropical species commonly -referred to that genus, and the stoloniferous habit also indicates a -different ecology.</p> - -<p class='c009'>The second of the original species of <i>Oreodoxa</i> is now referred -to the genus <i>Catoblastus</i>. It is a somewhat smaller tree from 12 -to 15 metres high, with a generally similar habit, and is also stoloniferous, -but the pinnae are broad, cuneiform and praemorse, or -irregularly truncate as in the species generally referred to <i>Martinezia</i>. -The drupaceous fruit is grayish and the pulp is only slightly -succulent; seed the size of a pigeon’s egg, its exterior brown, -marbled with numerous veins. In the characters of the spathe -the arrangement of the fruit and the edible quality of the heart of -the leaf-cluster, as well as in the formation of lateral off-shoot this -species is said to be similar to the first.</p> - -<p class='c009'>Botanists are not yet agreed upon the methods of dealing with -complications like the present in regard to the names of plants, -but it appears certain that those who do not recognize <i>Oreodoxa</i> -as a genus distinct from those admitted in the more recent works -on palms must associate it either with <i>Euterpe</i> or <i>Catoblastus</i>. -The latter name it would in that case replace, being much older. -Moreover, unless we are prepared to disregard Willdenow’s statements -concerning the stoloniferous trunk, the simple spathe and -the hermaphrodite flowers, to say nothing of many minor points -of circumstantial evidence, there is no scientific warrant for applying -the name <i>Oreodoxa</i> to the noble Antillean species with which -it has been universally associated.</p> - -<p class='c009'>The dried specimens which Willdenow studied were supplemented -by notes of field observation by a court gardener, who -was evidently also a botanist of some experience, to whom Willdenow -refers as his “friend.” The living colors are described -with considerable detail throughout the entire paper, which renders -noteworthy the fact that the spathes are stated to be cinereous. -This is in agreement with species of <i>Euterpe</i> which have -membranous spathes, but indicates a wide difference from the -West Indian trees where the spathes are thick and fleshy and remain -vivid green until they open and fall away.</p> - -<p class='c009'>The name <i>Roystonea</i> has been given to this ornament of the -<span class='pageno' id='Page_552'>552</span>Puerto Rico landscape as a respectful compliment to General Roy -Stone, the American engineer officer who secured the admiration -of the people of Puerto Rico by his fearlessness and conspicuous -energy in the Adjuntas road-building campaign which flanked -the line of Spanish defenses, and whose subsequent interest in the -improvement of the island will undoubtedly affect its future history.</p> - -<h4 class='c017'><strong>Roystonea Borinquena</strong> sp. nov. Plate <i>45. f. 2</i>.</h4> - -<p class='c020'>Trunk normally fusiform, 30–60 cm. thick, 12–18 m. high. -Leaf segments 4–4.4 cm. in width. Inflorescence robust, compact, -twice branched, the branches numerous and coarse, ferruginous, -pubescent. Fruits long-oval, yellowish brown at maturity. -Seeds 8 mm. by 6.3 mm., flattened about the hilum, rounded below; -wall of endocarp smooth, adherent over a small area.</p> - -<p class='c009'>The royal palm of Puerto Rico differs from that of Cuba in -having the trunk generally shorter, more robust and more distinctly -fusiform. The inflorescence is twice branched, with the -branches more densely clustered, coarser and darker colored than -those of the Cuban royal palm, <i>Roystonea regia</i>. They are also -covered with a slightly hispid brown pubescence while Cuban -specimens are much smoother and more pallid. The difference of -habit, to judge from photographs of the Cuban species, is most -apparent when the trees have grown in the open, as when planted -in avenues or along roadsides. In Puerto Rico, trees which are -obliged to compete with other vegetation are often tall, slender and -unsymmetrical. The typical form is shown in our photograph -(no. 250) taken in the plaza of Juana Diaz.</p> - -<p class='c009'>Martius gives the width of the pinnae of the Cuban royal palm -as from 8 to 12 lines. Cuban specimens show as much as one -inch and a quarter, while others from Porto Rico are half an inch -wider (44 mm.) of somewhat coarser texture and with more widely -separated secondary veins. The fruits of the Puerto Rico palm are -a deep yellowish brown when ripe, while those of the Cuban are said -to become violet or bluish black. According to Martius, the fruits -of the Cuban species are 6 lines by 4, but dried specimens show -no such discrepancy of proportions and measure only about 8.5 -mm. by 7.5 mm.</p> - -<p class='c009'>In Puerto Rico the fresh fruits are also much longer than broad, -perhaps even more slender than the figures given for the Cuban; -<span class='pageno' id='Page_553'>553</span>when dry they still appear somewhat longer and larger than the -latter.</p> - -<p class='c009'>The seeds of <i>Roystonea Borinquena</i> differ in several particulars -from those of the Cuban species. In shape they are longer and -less spherical, measuring 8 by 6.3 by 5.5 mm. instead of 7.8 by -7 by 6 mm.; the side bearing the hilum is much flattened and -even slightly concave; the fibers radiating from the hilum are -longer, and the corner between the hilum and the micropyle is -evenly rounded, not sharply squared and prominent as in <i>R. regia</i>. -On the back of the seed the smooth inner wall of the endocarp is -closely adherent over a small area, while in Cuban seeds this wall -remains attached over nearly the whole side and is furthermore -distinctly rugose-coriaceous on the surface, and has a distinct sulcus -in the median line.</p> - -<p class='c009'>The royal palm is not only the more conspicuous and characteristic -natural object in most parts of Puerto Rico, but it probably -exceeds the cocoanut in total economic importance. The most -useful part is the <i>yagua</i> or sheathing base of the leaf, with which -a large proportion of the houses of the poorer classes are thatched -or sided, or both.</p> - -<p class='c009'>The royal palm is one of the wild species which has been -distinctly advantaged by human interference in natural conditions. -It is a general fact that outside the climbing species palms are not -successful in competing with tropical forest vegetation. Originally -the royal palm and the corozo were probably confined to the -more rugged slopes of the lower limestone hills where they both -still retain a foothold in places where the natural growth seems -never to have been cleared away. But the vast majority of royal -palms now in existence in Puerto Rico stand on land which has -been cultivated at one time or another, and where the palms were -able to secure a foothold before the competition of other plants -became too strong.</p> - -<p class='c009'>The discovery of root tubercles on a young plant of this species -has been noted in the introductory statement. These tubercles -though small in size are very numerous upon the smaller roots. -In shape they are mostly oval and symmetrical. The larger are -about 2 mm. in length though our natural-size photograph shows -several fusiform or clavate bodies from 5 to 10 mm. long and as -<span class='pageno' id='Page_554'>554</span>much as 2 mm. thick. The color of the roots and tubercles is -white.</p> - -<p class='c009'>The royal palm of Florida is commonly referred to <i>Oreodoxa -regia</i>, though with very doubtful propriety. Apparently on account -of its great size, Cooper (Smithsonian Report 1860: 440. -1861) was inclined to identify it with <i>Oreodoxa oleracea</i> which had -also been reported from the Bahamas. The inflorescence and -seeds collected by Curtis on the western borders of the everglades -(no. 2676) are, however, obviously not those of <i>R. oleracea</i> but are -much more similar to those of <i>R. regia</i>. The branches of the inflorescence -are much longer and more lax than those of the species -of Cuba and Puerto Rico, from which they also differ in the frequent -development of tertiary branches, in this respect resembling -<i>Roystonea oleracea</i>. The fruits do not resemble those of <i>R. oleracea</i> -but are closely similar to those of the other species though somewhat -smaller and more nearly spherical. Several reliable witnesses -are on record to the effect that the trees are from 28 to 35 metres -high and as much as 45 metres has been claimed, while among the -royal palms of Cuba and Puerto Rico 18 metres is the commonly -recognized limit of size. Mr. C. T. Simpson, of the U. S. National -Museum, states that the palms of southwestern Florida lack the -conspicuous bulge so characteristic in the trunks of the Puerto -Ricon trees, and that they grow almost in reach of tide-water, -while the natural habitat of the Puerto Rico species is evidently -the limestone hills. In view of these differences it seems preferable -to treat the Florida royal palm as a distinct species, for which -the name <strong>Roystonea Floridana</strong> is proposed.</p> - -<p class='c009'>Mr. Simpson also informs me that the royal palms seen on the -islands off the coast of Honduras had the size and habit of those -of Florida and not the relatively stunted appearance of those seen -by him in Hayti and Jamaica. This fact is suggestive in connection -with the popular idea that the palms of Florida are to be -looked upon as recent arrivals from Cuba. Instead it seems more -reasonable to believe that the royal palm of Puerto Rico, like the -species of <i>Thrinax</i> of that island, is a remnant of the flora of the -time when the limestone hills were keys and hammocks like those -of southern Florida, and relatively poor in vegetation able to -crowd out the palms.</p> - -<div> - <span class='pageno' id='Page_555'>555</span> - <h4 class='c017'><strong>Acrista</strong> gen. nov.</h4> -</div> - -<p class='c020'>Trunk slender, of uniform diameter. Pinnae horizontal, appendiculate. -Inflorescences distinctly infrafoliar; spathes two, the -outer short, the inner long and slender. Spadix once-branched, -the branches coarse, tapering. Fruits with stigma lateral, seed -deeply ruminate, embryo basal.</p> - -<p class='c009'>Related to <i>Roystonea</i>, but differing in the more slender habit, -the once-branched inflorescence, the basal embryo, and in having -the leaflets in one plane. The color of the foliage is also considerably -lighter than that of the royal palm so that from a distance -the general appearance suggests the cocoanut rather than the -royal palm.</p> - -<p class='c009'>There is also some resemblance between the foliage of <i>Acrista</i> -and <i>Cocops</i>, but the absence of sheathing leaf-bases in the latter -genus will enable even young specimens to be separated. Moreover -the leaf-divisions of <i>Cocops</i> are much narrower and those at -the end of the leaf are not so much shortened as in <i>Acrista</i>.</p> - -<p class='c009'>Further differences from <i>Roystonea</i> are to be found, such as -the much smaller size and the larger roots, which are tuberculate -and inclined to become superficial like those of the llume palm. -The sheathing leaf-bases are not as long proportionately as in -<i>Roystonea</i>, and there is a distinct formation of fibers, although the -texture is flimsy. The outer sheaths do not split off and fall away -as promptly as in <i>Roystonea</i> but several dead ones sometimes hang -from about the base of the crown. Although the sheath is longer -than in <i>Aeria</i> the fibers are much better developed, there being -but a few membranous shreds in <i>Aeria</i>, and no distinct fibers -at all.</p> - -<p class='c009'>Among the mountains between Cayey and Guayama many -summits are covered with the <i>palma de sierra</i>, probably in places -which have never been cleared. A few of the palms follow -down the steeper uncultivated ravines. From a distance the -crowns suggest royal palms but a closer view renders the difference -apparent. There is also no suggestion of the bulging trunk of -<i>Roystonea</i>. In height the <i>palma de sierra</i> probably does not exceed -the royal palm.</p> - -<p class='c009'>The tips of leaflets of young leaves are connected by two brittle -red strands both of which lie on the mesial face, one along the -<span class='pageno' id='Page_556'>556</span>edge, the other near the middle. The tips of the leaflets are of -the same material and are sometimes persistent as long corneous -appendices like those of the cultivated <i>Howea</i>.</p> - -<p class='c009'>The generic name <i>Euterpe</i> Gaertner, which is commonly applied -to a considerable series of American palms related to the present, -was in reality established for the Malayan genus for which the -name <i>Calyptrocalyx</i> Blume is now in use, <i>Pinanga silvestris globosa</i> -Rumphius being cited by both Gaertner and Blume as the -original, in the one case, of <i>Euterpe globosa</i>, and in the other of -<i>Calyptrocalyx spicatus</i>. The origin and identity of the seed -described and figured by Gaertner have not been established, and -seem likely to remain in doubt; but in describing <i>Calyptrocalyx</i>, -Blume argued that the generic name should remain with the seeds -studied by Gaertner and declared that these did not belong to any -Malayan species but to some of the arecoid palms of the Mascarene -Islands. This suggestion seems not to have been disposed -of by Martius or others, but the fact that Gaertner’s fruits showed -an apical stigma seems to exclude them from the American group -with which the generic name has been associated.</p> - -<p class='c009'>In making use of the name <i>Euterpe</i> for Brazilian palms Martius -cites Gaertner as author of the genus and states that it is of worldwide -distribution in the tropics. Gaertner’s <i>E. globosa</i> is placed as -a synonym of <i>E. oleracea</i><a id='r5'></a><a href='#f5' class='c008'><sup>[5]</sup></a> Martius, and Jacquin’s older name <i>Areca -oleracea</i> stands in the same relation to <i>Euterpe edulis</i> Martius, thus -rendering <i>Euterpe oleracea</i> Martius a specific homonym. Subsequently -Martius claims the genus <i>Euterpe</i> for himself and expresses -doubt whether it is the same as that named by Gaertner, while -Drude in Engler and Prantl’s Natürlichen Pflanzenfamilien says -“<i>Euterpe</i> Mart. (nicht Gaertn.).” Martius also admits that the West -Indian <i>Areca oleracea</i> Jacquin is distinct from the Brazilian species -of <i>Euterpe</i>, and redescribes it under the name <i>Oreodoxa oleracea</i>.</p> - -<p class='c009'>A further complication connected with <i>Acrista</i> was brought to -light by finding that specimens collected by Sintenis (no. 1525) in -the Luquillo Mountains in northeastern Puerto Rico and distributed -from the Berlin Botanical Garden as <i>Oreodoxa oleracea</i> belong to -the present genus, together with others collected in Martinique by -Hahn (no. 805) and identified at Paris. With the last, the local -<span class='pageno' id='Page_557'>557</span>name <i>choux palmiste</i> is given, the same which Jacquin noted in -the original description of his <i>Areca oleracea</i> (Stirp. Am. 278. 1763). -Moreover, it can scarcely be determined from Jacquin’s description -whether he was dealing with a <i>Roystonea</i> or an <i>Acrista</i> or with -both, though his claim that his was the tallest palm of the Antilles -might hold the name for the <i>Roystonea</i>.</p> - -<p class='c009'>It might then be argued by some that Miller’s species, <i>Palma -altissima</i> constituted a segregate from Jacquin’s <i>oleracea</i> and that -the latter name is available for the <i>Acrista</i> of Martinique, whether -identical or not with that of Puerto Rico. But with a possible -doubt between the <i>Acrista</i> and the <i>Roystonea</i> there can scarcely be -a justification for the use of the same name for a third South -American species or a fourth West Indian.</p> - -<p class='c009'>As a means of decreasing the confusion it may be suggested -that as neither the generic nor the specific name of the Brazilian -palm which Martius called <i>Euterpe oleracea</i> (Hist. Nat. Palm. 2: -29) is available, the name <strong>Catis Martiana</strong> may be proposed, the -generic designation having reference to the drooping pinnae characteristic -of the present species and several of its South American -relatives.</p> - -<h4 class='c017'><strong>Acrista monticola</strong> sp. nov. <a href='#pl_44'>Plate 44.</a></h4> - -<p class='c020'>Trunk smooth, 10 to 15 m. high, perhaps taller, from 12 to -15 cm. in diameter, with distinct ring-like leaf-scars and internodes, -light brownish or appearing grayish with bark lichens.</p> - -<p class='c021'>Leaves about 2 m. long, the pinnae lanceolate, equally spaced -and lying nearly horizontal, 55 cm. long and 4 cm. broad; the -surface light green on both sides, with very close parallel longitudinal -veinlets, but no visible cross veins. The sheathing bases -are considerably shorter and generally appear somewhat more robust -than in <i>Roystonea</i>. In protected situations the leaf-bases persist -and the margins shrivel up and expose a flimsy network of -fibers. Inflorescences appearing several close together; by the -falling of the leaves above them they are left several inches below -the leaf-bases before maturity is attained. Spathes fusiform, long, -more slender and pointed than in <i>Roystonea</i>. Spadix once-branched, -1 m. long, 6 cm. in diameter at base, tapering gradually to the -apex. Branches 23 cm. long and less, the proximal branches -longest; at first appressed to the rachis, the branches are opened -out and held stiffly erect by a fleshy turgid cushion on the upper -(distal) side of the base of each. The branches of the rachis may -thus be said to be hinged, and with maturity the supporting cushion -<span class='pageno' id='Page_558'>558</span>dries away and allows them to resume a direction nearly parallel -to that of the rachis.</p> - -<p class='c009'>The dried fruits of <i>Acrista</i> are grayish brown in color and -nearly smooth or somewhat coriaceous in external texture; they -measure 11 or 12 mm. in length and are nearly as wide, being -slightly oboval in shape. The outer wall is thin and brittle and -covers a more or less distinct thin layer of amorphous brownish -material probably representing the pulp of the fresh fruit; in the dry -state this may adhere either to the outer wall or to the fibers next -inside. Near the base these fibers are simple, pointed and vertical; -about half way up they divide and anastomose and are, as it were, -felted and cemented together to form an oval sac open below and -closed above. The outer fibers are much coarser than the inner -and there are sometimes suggestions of three layers separated by -a dark-brown friable material. A few of the delicate inner fibers -are adnate to the surface of the seed which is otherwise free from -its fibrous covering.</p> - -<p class='c009'>Seed 8.5 mm. by 8 mm., slightly lighter in color than the outside -of the fruit. Surface slightly uneven with obscure veinlike -ridges and impressions of the fibers of the outer covering. The -kernel is white, hard and bony, and deeply ruminate, though this -is not apparent from the outside. The channels are very narrow -and often radial and straight; they penetrate 3 mm. or less. -Embryo directly basal; hilum lateral, somewhat below the level -of the stigma; a short raphe extends about half way to the embryo.</p> - -<h3 class='c010'>Family COCACEAE</h3> - -<p class='c016'>The cocoid palms are a distinctly American group, the African -oil-palm, <i>Elaeis Guineensis</i> and the cocoanut being the only outliers -of the family which have been supposed to be indigenous in the -Old World. South America is the center of distribution and is the -home of a large proportion of the two hundred or more species. -Only five genera reach Puerto Rico, and one of these, <i>Cocos</i>, was -probably not a native of the island.</p> - -<h4 class='c017'>Key to the Subfamilies of Cocaceae</h4> - -<p class='c020'>Trunks, stems, and midribs beset with sharp spines; seeds foraminate at or above the -middle.</p> - -<div class='lg-container-r c022'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Subfamily <span class='sc'>Bactridinae</span>.</div> - </div> - </div> -</div> - -<p class='c021'>Trunks and other parts unarmed; seeds foraminate at base.</p> - -<div class='lg-container-r c022'> - <div class='linegroup'> - <div class='group'> - <div class='line'>Subfamily <span class='sc'>Cocinae</span>.</div> - </div> - </div> -</div> - -<div> - <span class='pageno' id='Page_559'>559</span> - <h4 class='c017'>Subfamily <span class='sc'>Bactridinae</span></h4> -</div> - -<p class='c016'>Some of the numerous South American representatives of this -group are nearly smooth, but the three genera known from Puerto -Rico have the trunks, leaf-bases, midribs and inflorescences beset -with sharp black spines, and are thus readily recognizable.</p> - -<h5 class='c017'>Key to the Genera of Bactridinae</h5> - -<p class='c011'>Trunk small, cespitose; leaves separated by long internodes; foramina of seeds -apical.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Bactris.</span></div> - </div> - </div> -</div> - -<p class='c013'>Trunk medium or large, solitary; leaves crowded together at the summit; foramina -peripheral.</p> - -<p class='c014'>Trunk slender; leaf-divisions broad, praemorse-truncate; pistillate and staminate -flowers intermixed on the inflorescence; exocarp fleshy.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Curima.</span></div> - </div> - </div> -</div> - -<p class='c014'>Trunk robust; leaf-divisions narrow, sharp-pointed; pistillate flowers below and -separate from the staminate; exocarp fibrous.</p> - -<div class='lg-container-r c015'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Acrocomia.</span></div> - </div> - </div> -</div> - -<h5 class='c017'>BACTRIS Jacquin, Stirp. Am. 279. <i>pl. 271.</i> 1763</h5> - -<p class='c016'>The type of this genus, <i>Bactris minor</i> Jacquin, described from -the vicinity of Carthagena, Colombia, is a small spiny palm with -creeping rootstocks. The upright trunks are about an inch thick -and twelve feet high, with long spiny internodes. The fruits are -fleshy, purple, and about the size of a cherry. Several species of -<i>Bactris</i> are known from the West Indies though the generic name -has doubtless been applied rather loosely to all the small spiny -cocoid palms.</p> - -<p class='c009'>The two following species of <i>Bactris</i> from Puerto Rico described -by Martius several decades ago seem not to have been secured by -recent collectors unless it be true, as suggested below, that one of -them, the simple-leaved <i>B. acanthophylla</i> applies to a young -<i>Curima</i>. Of <i>B. Pavoniana</i> the narrowly grass-like leaf-divisions -would be sufficiently characteristic to separate it at once from all -other palms known from Puerto Rico.</p> - -<h5 class='c017'><span class='sc'>Bactris acanthophylla</span> Martius, Palm. Orbign. 67</h5> - -<p class='c016'>“Trunk low, spiny; frond simple, the petiole spiny; blade -lanceolate in young plants, oblong in the adult, cuneate at the -base and bifid at apex, the margin unequally erose, unarmed; -rachis and primary veins spiny on both sides; spines bristle-like, -narrowed at base, those of the petiole black, those of the blades -fuscous.”</p> - -<p class='c009'><span class='pageno' id='Page_560'>560</span>“In the western part of the island of Puerto Rico, near the -village of Yrurena, in swampy places on the margins of aboriginal -forests at an altitude of 400 feet; collected by Wylder, 1827.” -(Martius Hist. Palm. <strong>3</strong>: 281.)</p> - -<p class='c009'>A specimen to which the above diagnosis would not be inapplicable -was collected by Sintenis in the mountain forests near -Maricao (no. 484). It was distributed from Berlin as a <i>Martinezia</i>, -together with two other very young plants and a seed to -which one of these was attached.</p> - -<p class='c009'>The seed evidently did not come from a cocoid palm but together -with the young seedlings may belong to <i>Acrista</i>. The -large spiny plant is probably a young specimen of <i>Curima</i>, and -should these suggestions prove to be correct the specific name -<i>acanthophylla</i> must be transferred to this genus though whether -it will replace <i>colophylla</i> or not is not to be determined until it can -be ascertained that the Maricao species is the same as that here -described from Bayamon.</p> - -<h5 class='c017'><span class='sc'>Bactris Pavoniana</span> Martius, Palm. Orbign. 70</h5> - -<p class='c016'>“Frond pinnate, rachis with rather long spines and black bristles: -linear acuminate, about equally distant, the terminal united, -setose-ciliate, glaucous below and with a sparse whitish down.”</p> - -<p class='c009'>“Puerto Rico; Pavon.” (Martius, Hist. Pal. <strong>3</strong>: 282.)</p> - -<p class='c009'>Grisebach has reported this species from Antigua and has redescribed -it as follows, presumably from the Antigua specimens.</p> - -<p class='c009'>“‘Trunk low’; <i>leaves pinnatisect: segments numerous, grass-like, -linear-acuminate</i> or the uppermost broader by cohesion, glaucous -and minutely puberulous or glabrescent beneath, approximate, -subequidistant, reduplicate at the base: <i>rachis armed with -very long black prickles</i> and rare bristles, keeled above.—Flowers -unknown; leaf segments (in our specimens, which are cut off, -perhaps about the middle of the rachis) more than 30–jugal, 3‴–6‴ -distant, 12″–8″ long, 4‴–2‴ broad, superior gradually -shorter, the uppermost cohering ones sometimes 6‴–8‴ broad: -prickles scattered or clustered, slender, the greatest 2″ long. -Hab. Antigua: <i>Wullschl.</i>, Blubber valley; [Portorico].” (Grisebach, -Fl. Brit. W. I., 520. 1864.)</p> - -<div> - <span class='pageno' id='Page_561'>561</span> - <h5 class='c017'><strong>Curima</strong> gen. nov.</h5> -</div> - -<p class='c020'>Trunk rather slender, internodes armed with scattered slender -spines. Leaves and inflorescence also spiny, especially on the -proximal parts. Pinnae numerous, strap-shaped, praemorse-truncate, -imperfectly separated near the ends of the leaves. Inflorescence -rather slender, once-branched; pistillate flowers mostly -located near the bases of the branches. Fruit drupaceous, exocarp -fleshy, not fibrous; foramina peripheral.</p> - -<p class='c009'>A palm related to <i>Acrocomia</i> and to the genera commonly -grouped under the name <i>Martinezia</i>, to which <i>Aiphanes</i> and <i>Marara</i> -are generally referred as synonyms. Reasons why none of these -names appears available for the Puerto Rico species are given below. -The characters of the fruit, with foramina near the middle, seem -to indicate that <i>Curima</i> is not remotely related to <i>Acrocomia</i>, from -which it differs superficially in the more slender habit, the truncate -or praemorse leaves and the very long and lax inflorescence.</p> - -<h5 class='c017'><strong>Curima colophylla</strong> sp. nov. <a href='#pl_46'>Plate 46.</a></h5> - -<p class='c016'>The solitary trunk rises from a mass of spiny roots somewhat -smaller than those of the llume palm (<i>Aeria</i>). Diameter of trunk -from 1–1.5 cm., often slightly thinner near the ground, though -showing no such tendency to bulge as appears in <i>Roystonea</i>, <i>Aeria</i> -and <i>Acrocomia</i>. The surface of the internodes is rather sparingly -provided with needle-like spines smaller and more slender than -those of <i>Acrocomia</i>. On old trunks the spines are often more or -less completely absent.</p> - -<p class='c009'>Leaves 2.13–2.5 m. long, with from 30 to 40 pairs of strap-shaped -praemorse-truncate divisions shorter and broader as the -end of the leaf is approached, and with a terminal undivided -area several inches wide. There is no apparent tendency toward -the arrangement of the leaf-divisions in clusters as in <i>Martinezia -caryotaefolia</i> and other allied species.</p> - -<p class='c009'>The base, rachis, midribs and even the surfaces of the pinnae -are beset with coarse black or deep red spines which are closely -appressed when young and become erect as soon as the surfaces -are exposed, all the parts except the spines and the upper surfaces -of the leaf-division being covered at first with a light grayish or -brownish scurfy coating which gradually disappears.</p> - -<p class='c009'><span class='pageno' id='Page_562'>562</span>The inner spathe is narrowly fusiform and about 1 m. long. -It splits to the level of the outer spathe revealing the spadix and -its extremely spiny peduncle. The flowers are greenish cream -colored in mass, paler and not so yellow as in <i>Acrocomia</i>. The -pistillate flowers are relatively very few and located near the base -of the simple branches.</p> - -<p class='c009'>The cherry-like fruits are dull orange or brick red with rather -dry fleshy or oily exocarp having a rather mealy though distinctly -acid flavor, but no really unpleasant taste. This fleshy covering -is only very slightly fibrous, and that near the base; the seeds fall -off very easily sometimes leaving the base of the exocarp attached -to the fruiting branch. The nut is about 12 mm. in greatest or -transverse diameter and about 10 mm. high, while the fresh fruit -is 14–16 mm. through and 12 or 13 mm. thick. The surface is -deeply and irregularly pitted and marked with three radially fibrous -striate foveolae.</p> - -<p class='c009'>It is perhaps too soon to assert that there is only one species -of the present genus in Puerto Rico. The trees certainly differ -considerably in size though not more than the cocoanut and others. -There is also a noticeable difference in the abundance of spines. -Such apparent variability may, however, be due to age, the older -trees tending to become less densely beset with the brittle black -spines which are often conspicuous on young specimens.</p> - -<p class='c009'>The specimens (no. 878) and photographs on which this genus -and species were based were secured on the limestone hills near the -wagon road between Bayamon and Toa Baja where the present -palm is not uncommon.</p> - -<p class='c009'><i>Curima</i> appeared to be especially abundant about Bayamon -but is probably rather generally distributed in the limestone hills -of the island, perhaps also on other soils. A few trees were seen -along the road between Utuado and Lares, and numerous others -between Isolina and Manati. Sintenis collected specimens of what -is apparently the same species near Juncos and Hato Grande, -and at Maricao young specimens discussed under <i>Bactris acanthophylla</i>.</p> - -<p class='c009'>As far as Puerto Rico is concerned, this palm is very easily -recognized by means of the curiously truncate leaf-divisions, the -outer margins of which appear as though accidentally injured or -<span class='pageno' id='Page_563'>563</span>eaten away by caterpillars. This feature is, however, shared with -numerous other West Indian and South American palms, though -apparently only one, the so-called <i>grigri</i> palm of Martinique -can be referred to the present genus with confidence. For this the -name <strong>Curima corallina</strong> (<i>Martinezia corallina</i> Martius, Hist. Nat. -Palm. 3: 284) appears to be correct, although Martius places -Gaertner’s much older <i>Bactris minima</i> as a synonym for his -species. Gaertner, however, was making a second attempt at renaming -Jacquin’s <i>Bactris minor</i>, having previously misplaced that -name in connection with a West Indian <i>Acrocomia</i>, probably the -same to which Jacquin had already supplied the name <i>Cocos aculeatus</i>. -Thus it is possible to treat <i>Bactris minima</i> Gaertner as a -synonym of <i>Bactris minor</i> Jacquin and the restoration of Gaertner’s -inappropriate name for the <i>Curima</i> is thus avoided.</p> - -<p class='c009'>With this preliminary description we may return to the consideration -of the generic names <i>Martinezia</i>, <i>Aiphanes</i> and <i>Marara</i> -which other writers have applied to relatives of the present palm -or treated as synonyms. <i>Martinezia</i> was described by Ruiz and -Pavon (Prodr. Flor. Per. et Chil. 148. 1794) for five Peruvian -palms, but it was amended by Martius (Hist. Nat. Palm. <strong>3</strong>: -283) by the removal of all the original species and the substitution -of a new set. Of the original species studied by Ruiz and Pavon -only two, <i>M. ciliata</i> and <i>M. abrupta</i> were mentioned in connection -with the original description of the genus, and this because they -offered exceptions to the generic characters. If these were to be -excluded for this reason from those among which the type is to -be sought, the name <i>Martinezia</i> must go with the subsequently -published <i>M. ensiformis</i>, now referred to <i>Euterpe</i><a id='r6'></a><a href='#f6' class='c008'><sup>[6]</sup></a> or with <i>M. -lanceolata</i> and <i>M. linearis</i>, now placed in <i>Chamaedorea</i>. If we -hold to the first species, <i>M. ciliata</i>, <i>Martinezia</i> is probably a synonym -of <i>Bactris</i>. The second species, <i>M. abrupta</i>, has escaped -Martius and the Index Kewensis, in which a sixth name <i>M. interrupta</i> -is the only one by Ruiz and Pavon now credited as being a -genuine <i>Martinezia</i>. Thus by the method of elimination <i>Martinezia</i> -would according to current classification replace <i>Chamaedorea</i> -while by the method of types it would stand as a synonym of <i>Bactris</i>.</p> - -<p class='c009'>The genus <i>Aiphanes</i> was established by Willdenow on <i>Aiphanes -<span class='pageno' id='Page_564'>564</span>aculeata</i>, a spiny palm from the mountains about Caracas. The -trunk is said to be erect, ten meters high, subcylindrical and very -spiny. The leaves are about 1.6 m. long, with four pairs of remote, -broad, cuneate, praemorse pinnae, strongly whitish pubescent -on the under side; the petiole is also beset with spines. Spathe -acuminate at both ends, aculeate on the outside, smooth -within, opening longitudinally; spadix 4.5 dm. long, composed -of cylindrical spikes placed opposite. Flowers hermaphrodite; -calyx trifid, the divisions acute; petals acuminate; filaments 6, -subulate, anthers rounded, style as long as the stamens, stigma -trifid; drupe globose, the fleshy farinaceous pulp rather tasteless, -though edible; nut hard, of the size of a musket ball, unilocular, -black, furrowed with a large number of grayish grooves, -of which three are always much larger than the others. The kernel -is white, very sweet, and very good to eat. <i>Aiphanes</i> grows -in the ravines and forests of the high mountains of the district of -Caucagua, province of Caracas, Venezuela and requires a fertile, -somewhat moist soil. It flowers and fruits in July.</p> - -<p class='c009'>From the above it appears that <i>Aiphanes</i> is a genus quite different -from <i>Curima</i>, approaching some of the South American -species of <i>Bactris</i> much more closely than it resembles the Puerto -Rico tree.</p> - -<p class='c009'>The genus <i>Marara</i> was based by Karsten (Linnaea, <strong>28</strong>: 389) -on <i>M. bicuspidata</i> from Colombia, a cespitose palm having a trunk -7 meters high and 10 cm. in diameter, clothed with black spines 6 -to 8 mm. long. The leaves are 125 cm. long with from 60 to 80 -pairs of cuneate pinnules which measure 3 dm. in length and 15 -cm. in width, and are clustered in sixes or eights. This appears -to be a very extreme development of the leaf-arrangement -seen in the cultivated palm commonly called <i>Martinezia caryotaefolia</i> -where the leaflets are distinctly clustered, but by no means -so crowded as must be the case when on the side of a leaf 125 -cm. long are leaflets with an aggregate width of 10–13 m.</p> - -<p class='c009'>The palm commonly cultivated in conservatories as <i>Martinezia -caryotaefolia</i> is obviously allied to <i>Curima</i>, perhaps more closely -than to either <i>Aiphanes</i> or <i>Marara</i>, but in addition to the clustered -pinnules it has a more slender habit, especially apparent in the -long internodes and the more lax inflorescence. This difference -<span class='pageno' id='Page_565'>565</span>in habit is also evidently correlated with the fact that the leaf-bases -do not become deeply gibbous and obliquely inclined from -the trunk as in <i>Curima</i> but remain closely sheathing. Moreover, -the upper side of the leaf-stalk which in the Puerto Rico palm is -deeply channeled and has lateral corners sharp or torn into fibers -nearly to the insertion of the lowest pinnae is in the conservatory -species nearly cylindrical for a long distance below the pinnae, -and has long spines on the upper side as well as on the lower. -It is as though the ligule were located in <i>Curima</i> near the insertion -of the lowest pinnae while in the other form it remains close -to the trunk, with a cylindrical section intercalated to reach to -where the pinnae begin. Apparently we are dealing with still -another generic group for which the name <strong>Tilmia</strong> would not -be inappropriate in allusion to the shorn and disheveled appearance -which it shares with <i>Curima</i>. The species studied are <strong>Tilmia caryotaefolia</strong> -(<i>Martinezia caryotaefolia</i> H.B.K. Nov. Gen. et Sp. <strong><span class='fss'>I</span></strong>: 305. -<i>pl. 699</i>) in the National Botanic Garden and <strong>T. disticha</strong> (<i>Martinezia -disticha</i> Linden, Cat. 32. 1875).</p> - -<p class='c009'>The seeds of <i>Tilma caryotaefolia</i> are like those of <i>Curima</i>, but -considerably larger, rounder, and much smoother. The foramina -are peripheral, but are much smaller and more shallow, those of -<i>Curima</i> being surrounded, as it were, by a prominent rim which -adds somewhat to the apparent width of the seed. In both genera -the nuts are unsymmetrical, the side which has the largest foramen -being distinctly larger than the others and in <i>Curima</i> the irregularly -pitted sculpture is coarser.</p> - -<h5 class='c017'>ACROCOMIA Martius, Hist. Nat. Palm. <strong>2</strong>: 66</h5> - -<p class='c016'>A genus of palms distributed through tropical America from -Mexico to Cuba and Paraguay. All the species are of stocky, -compact growth, with a dense crown of numerous leaves. The -trunk and the leaf-stalks are usually armed with strong, sharp -spines, sometimes several inches long.</p> - -<p class='c009'>Although totally different on close inspection this genus has in -Puerto Rico a superficial resemblance to the royal palm, which -often deceives travelers. The similarity lies mostly in the two facts -that both the royal and corozo palms are more robust and stiffly -erect than the cocoanut, and that the leaf-divisions instead of lying -<span class='pageno' id='Page_566'>566</span>horizontal and in one plane are tilted at different angles to the midrib, -thus giving the foliage seen in the mass a somewhat unkempt -appearance in comparison with the cocoanut.</p> - -<p class='c009'>In distinguishing the corozo palm from the royal palm when -seen at a distance so great that the spines of the one and the -columnar green leaf-sheaths of the other can not be seen, recourse -may be had to the following facts. The leaf crown of the corozo -palm is much rounder, thicker and more compact than that of the -royal palm, since it contains many more leaves, and these persist -much longer. The royal palm can also be known by the unopened -leaves which project straight upward like flag-poles or -lightning-rods, while in <i>Acrocomia</i> the leaves open as they are -pushed out and seldom offer a suggestion of the spire-like effect.</p> - -<h5 class='c017'><strong>Acrocomia media</strong> sp. nov.</h5> - -<p class='c020'>Trunk 20–30 cm. in diameter near the base, thickened above -to 50 cm. or less; height commonly about 6–8 m. rarely exceeding -10 m. Surface of trunk with slight annular impressions. Internodes -armed with slender black spines, the larger 10–15 cm. long, -mostly confined to the lower half of the internodes. Fruit green, becoming -yellowish, the husk firmly fibrous, inedible; about 35 mm. -in diameter, nearly spherical in shape, with a distinct apical papilla. -Kernel 25 mm. wide by 22 mm. long; width of the cavity 18 mm. -The type specimen was collected near Ponce (photograph no. 255).</p> - -<p class='c009'>The <i>Acrocomia</i> of Puerto Rico seems to differ from <i>A. aculeata</i> -(Jacquin) in its robust habit and somewhat bulging trunk, while it -is less stout and less swollen than <i>A. fusiformis</i> (Swartz). The -name <i>Acrocomia lasiospatha</i>, although used by Martius and Grisebach -has no warrant for supplanting <i>fusiformis</i> of Swartz, which must -be preferred for the Jamaica species with the thick, swollen trunk.</p> - -<p class='c009'>In Jamaica there seem to be at least two species of <i>Acrocomia</i>, -the larger of which is called the “great macaw” palm, and is described -as having a fusiform trunk as thick as a man’s body. -What is presumably the same species occurs in Cuba as shown by -a photograph from the vicinity of La Gloria on the north coast. -The greatest diameter of the trunk is three or four times the thickness -near the base. In Puerto Rico no trees approximating these -proportions were observed, the greatest amount of swelling probably -not reaching twice the diameter below. According to Maza -<span class='pageno' id='Page_567'>567</span><i>Acrocomia lasiospatha</i> grows wild in Cuba and is known under the -name “coroja de Jamaica.” Swartz described his <i>Cocos fusiformis</i> -on the supposition that it was distinct from the <i>Cocos aculeatus</i> of -Jacquin, from Martinique, by reason of the fusiform trunk. The -species was, nevertheless, reduced by Martius to his South American -<i>Acrocomia sclerocarpa</i>, perhaps because the spathe is said to -be spiny, a character probably subject to great variation.</p> - -<p class='c009'>Jacquin’s name <i>Acrocomia aculeata</i> (1763) must, it seems, be -used for the West Indian palm placed by Martius under his <i>A. -sclerocarpa</i>, which is to be maintained, if at all, as a South American -species. Jacquin declares that the habit of his tree is similar -to that of <i>Cocos nucifera</i> and <i>Cocos amara</i> (<i>Syagrus</i>), and his -figure shows a tall straight trunk tapering slightly upward, with -no tendency to bulge. The spines of the trunk are few and the -midribs are aculeate on both sides. The drawing of the fruit is -37 mm. long by 41 mm. wide and has a broad conic papilla -at apex. As indicated above, such a tree was not noticed in Puerto -Rico where all the corozo palms are distinctly, though slightly, -thicker some distance above the base, though apparently never -equaling <i>A. fusiformis</i> in this respect.</p> - -<h4 class='c017'>Subfamily <span class='sc'>Cocinae</span></h4> - -<h5 class='c017'>Key to the Genera of Cocinae</h5> - -<p class='c011'>Trunk distinctly ringed, rising from an inclined swollen base; leaves numerous, many -of the lower drooping or pendant, the divisions many and narrow; fruits very large, -borne continuously.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Cocos.</span></div> - </div> - </div> -</div> - -<p class='c013'>Trunk nearly smooth, straight and columnar; leaves fewer, not becoming pendant, divisions -less numerous and broader; fruits small, borne at one time and ripening together.</p> - -<div class='lg-container-r c012'> - <div class='linegroup'> - <div class='group'> - <div class='line'><span class='sc'>Cocops.</span></div> - </div> - </div> -</div> - -<h5 class='c017'><span class='sc'>Cocos nucifera</span> Linn. Sp. Pl. 1188. 1753</h5> - -<p class='c016'>The cocoa-palm is largely confined to the neighborhood of -the coast, but is occasionally planted in small numbers in the interior -districts, though it generally does not thrive in such situations -especially on the north side of the island. On the drier -southern slope of Puerto Rico, which is avoided by the royal palm, -the cocoanut seems to thrive better, when it has once become established. -Cocoanuts are mostly gathered while still green, for -the sake of the milk or, as it is there called, the water (<i>coco de -agua</i>) a popular beverage wherever obtainable. Although the -<span class='pageno' id='Page_568'>568</span>local consumption of nuts for this purpose is considerable it is -largely confined to the towns of the coast region. Thus it may -be said that in Puerto Rico the cocoa-palm affords a luxury rather -than a necessity, and that it is exceeded in economic importance -by the royal palm.</p> - -<h5 class='c017'><strong>Cocops</strong> gen. nov.</h5> - -<p class='c016'>In a valley on the road between Lares and San Sebastian several -young palms were noticed with leaves similar to the cocoanut, -but smaller and finer. Finally one mature specimen was found, -with both trunk and leaves strongly suggesting the cocoanut, but -much smaller. The leaves are light green, the leaflets in one -plane, and the fibers separating from the narrow base of the leaf. -The fibers are few and flimsy, but like those of the cocoanut and -other South American species of <i>Cocos</i>. The palm stood within a -few feet of a small permanent brook, down which the seeds had -evidently been carried and there were several young palms along -the bank. The native living in an adjacent house could give us no -name except <i>palmilla</i>, and seemed to think that none was necessary -since the tree does not yield <i>yagua</i> or anything else of use. -Its early extermination is therefore not unlikely.</p> - -<p class='c009'>In the absence of flowers and fruit<a id='r7'></a><a href='#f7' class='c008'><sup>[7]</sup></a> the relationships of the present -genus cannot be ascertained nor its validity satisfactorily established. -There seems, however, to be no reason for including the -species in any of the genera known from Puerto Rico or other parts -of the West Indies, and to associate it with Central and South -American types would be a still less warrantable procedure.</p> - -<p class='c009'>It is also believed that under the present circumstances the application -of a name is justified by convenience of reference and that -this will also assist in securing the attention of botanical collectors -better than a mere allusion to “an unknown palm which may -be new.”</p> - -<h5 class='c017'><strong>Cocops rivalis</strong> sp. nov.</h5> - -<p class='c016'>In diameter the trunk appeared to be about midway between -the palma de sierra (<i>Acrista</i>) and the cocoanut, and had the short -internodes of the latter. The leaves, however, probably remain -<span class='pageno' id='Page_569'>569</span>somewhat smaller than those of <i>Acrista</i> to which they might -also be said to have a general similarity, except at the base where -their cocoid proclivities become obvious. At a little distance -<i>Cocops</i> might be overlooked as <i>Acrista</i>, while at shorter range it -might be mistaken for a very depauperate cocoanut. No species -of <i>Cocos</i> is, however, known to be native in the West Indies except -the doubtful <i>Cocos crispus</i> H.B.K., from Cuba.</p> - -<p class='c009'>As a species <i>Cocops rivalis</i> may prove to be similar to <i>Syagrus -amara</i> (Jacquin), which is reported as far north as Jamaica, but it -seems to have no true generic affinity with <i>Syagrus cocoides</i> Martius, -the South American palm which is the type of its genus. -According to Martius <i>S. amara</i> is 30 cm. in diameter, as large or -larger than <i>Cocos nucifera</i> and attains the height of from 20 to 35 -meters; <i>Syagrus cocoides</i>, on the other hand, is a small slender -palm with a trunk 2.5–3 m. high and 5–7.5 cm. in diameter, and -with foliage and habit resembling the slender and diffuse South -American species referred by Martius to <i>Cocos</i>, but very different -from <i>Cocos nucifera</i> or from <i>Cocops</i>.</p> - -<p class='c009'>A leaf collected by Sintenis (no. 6061) near Camuy and -coming from Berlin labeled <i>Oreodoxa</i>, obviously did not originate -with an arecoid palm, but probably belongs with the present -species. The region of Camuy is but a few miles from Lares, -but there is much extremely rough and unoccupied country between, -so that the danger of extermination appears to be somewhat -diminished.</p> - -<div class='chapter'> - <h2 class='c023'>Explanation of Plates</h2> -</div> - -<p class='c024'><span class='sc'><a href='#pl_43'>Plate 43.</a></span> <i>Thrincoma alta</i>, top of type specimen (no. 848).</p> - -<p class='c021'><span class='sc'><a href='#pl_44'>Plate 44.</a>.</span> <i>Thrincoma alta</i>, part of leaf and seeds, natural size.</p> - -<p class='c021'><span class='sc'><a href='#pl_45'>Plate 45.</a>.</span> <i>Thrinax Ponceana</i>, type (no. 1005).</p> - -<p class='c021'><span class='sc'><a href='#pl_46'>Plate 46.</a>.</span> <i>Acrista monticola</i>, type (no. 761) collected near Adjuntas.</p> - -<p class='c021'><span class='sc'><a href='#pl_47'>Plate 47.</a>.</span> Fig. 1, <i>Aeria attenuata</i>. Fig. 2, <i>Cocops rivalis</i> (left) and <i>Roystonea -Borinquena</i> (right).</p> - -<p class='c021'><span class='sc'><a href='#pl_48'>Plate 48.</a>.</span> <i>Curima colophylla</i>, apex of flower-cluster and terminal leaf-division, -natural size. From type specimen (no. 878).</p> -<div id='pl_43' class='figcenter id001'> -<img src='images/i_043.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 43.</span></span><br><br>THRINCOMA ALTA<br><br>HELIOTYPE CO., BOSTON.</p> -</div> -</div> -<div id='pl_44' class='figcenter id001'> -<img src='images/i_044.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 44.</span></span><br><br>THRINCOMA ALTA<br><br>HELIOTYPE CO., BOSTON.</p> -</div> -</div> -<div id='pl_45' class='figcenter id001'> -<img src='images/i_045.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 45.</span></span><br><br>THRINAX PONCEANA<br><br>HELIOTYPE CO., BOSTON.</p> -</div> -</div> -<div id='pl_46' class='figcenter id001'> -<img src='images/i_046.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 46.</span></span><br><br>ACRISTA MONTICOLA<br><br>HELIOTYPE CO., BOSTON.</p> -</div> -</div> -<div id='pl_47' class='figcenter id002'> -<img src='images/i_047.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 47.</span></span><br><br><span class='left'>AERIA ATTENUATA</span> <span class='right'>COCOPS RIVALIS</span></p> -</div> -</div> -<div id='pl_48' class='figcenter id001'> -<img src='images/i_048.jpg' alt='' class='ig001'> -<div class='ic001'> -<p><span class='right'><span class='sc'>Pl. 48.</span></span><br><br>CURIMA COLOPHYLLA<br><br>HELIOTYPE CO., BOSTON.</p> -</div> -</div> - -<hr class='c025'> -<div class='footnote' id='f1'> -<p class='c009'><a href='#r1'>1</a>. This spelling and the adjective use of the name in this form are editorial corrections.</p> -</div> -<div class='footnote' id='f2'> -<p class='c009'><a href='#r2'>2</a>. Of numerous insects distinctive of the more southern palmetto the most conspicuous -is a longicorn beetle, <i>Agallissus chamaeropis</i> Horn, the larvae of which bore in -the leaf-bases. The more common <i>Inodes</i> is inhabited by the allied genus <i>Zagymnus</i>, -though another species of <i>Agallissus</i> is reported from Texas, where the native <i>Inodes</i> -is of the smooth-trunked type.</p> -</div> -<div class='footnote' id='f3'> -<p class='c009'><a href='#r3'>3</a>. </p> -<p class='c021'><strong>Inodes vestita</strong> sp. nov. Trunk about 45 cm. thick at base, columnar or tapering -upward; surface rimose, the chinks commonly 5 mm. wide and 20 mm. apart. Leaf-bases -torn into very numerous, fine, hair-like, light reddish-brown fibers, a few much -coarser than the others and measuring from .6 to 1 mm. in diameter. The epidermis -separates into delicate membranous shreds, the surface of which is delicately pitted and -sparsely beset with brownish hairy-margined peltate scales. Petiole 10 cm. or upward -in width below near where it begins to split, 4.5 cm. wide at base of ligule; 3 m. long, -concave above; blade 2.13 m. long, 2.50 m. wide, composed of about 60 segments, the -apical united more than two-thirds their length, the basal for less than one-third; apical -segments 4.5 cm. wide, deeply divided above, a long fiber terminating both the longer -and the shorter ribs.</p> - -<p class='c009'>As shown by the rimose bark this species affords a rather extreme instance of the -gradual enlargement of the trunk at a distance from the growing point. Numerous leaf-bases -remain attached to the trunk in the greenhouse as they would not do in nature, -since they are torn loose except for a few fibers at the extreme sides.</p> -</div> -<div class='footnote' id='f4'> -<p class='c009'><a href='#r4'>4</a>. Dr. Rose also kindly permits the use of the following field notes and measurements -showing that <i>Inodes Rosei</i> is also a taller and more slender tree than <i>I. Uresana</i>.</p> - -<p class='c021'>“Trees 6–12 or sometimes even 18 meters high, the long slender naked trunk 15–20 -cm. in diameter, crowned with a large cluster of leaves; petioles 60 cm. or more long, -flat on the face, pubescent, but becoming glabrate; blade pale green, 8 cm. or more in -width, strongly keeled, more or less clothed beneath with brown scales on the large -veins; segments cleft to below the middle, 25 mm. or less wide; inflorescence in large -branching panicles 60 cm. or more long; fruit spherical, 18 mm. in diameter, blackish -or dark blue when mature.”</p> - -<p class='c009'>“A very common tree east of Rosario towards Mazatlan, also extending all the way -from Rosario to Acaponeta; especially common on the low hills, and east of Rosario -toward the mountains. This species is of considerable economic importance, the trunks -being used in building fences, corrals and huts, while the leaves appear as thatch on a -majority of the houses of this region.”</p> -</div> -<div class='footnote' id='f5'> -<p class='c009'><a href='#r5'>5</a>. Hist. Nat. Palmarum 2: 29.</p> -</div> -<div class='footnote' id='f6'> -<p class='c009'><a href='#r6'>6</a>. Roemer and Schultes treated <i>Martinezia</i> as a synonym of <i>Oreodoxa</i>.</p> -</div> -<div class='footnote' id='f7'> -<p class='c009'><a href='#r7'>7</a>. That the fruits are small and are ripened at one season, as stated in the key, was -apparent from the size of the seedlings and from other circumstances which accorded -with the testimony of the man whose house stood within a few rods of the largest tree.</p> -</div> - -<div class='pbb'> - <hr class='pb c006'> -</div> -<div class='tnotes x-ebookmaker'> - -<div class='chapter ph2'> - -<div class='nf-center-c0'> -<div class='nf-center c026'> - <div>TRANSCRIBER’S NOTES</div> - </div> -</div> - -</div> - - <ol class='ol_1 c003'> - <li>Silently corrected obvious typographical errors and variations in spelling. - - </li> - <li>Retained archaic, non-standard, and uncertain spellings as printed. - - </li> - <li>Re-indexed footnotes using numbers and collected together at the end of the last - chapter. - </li> - </ol> - -</div> - -<div style='display:block; margin-top:4em'>*** END OF THE PROJECT GUTENBERG EBOOK A SYNOPSIS OF THE PALMS OF PUERTO RICO ***</div> -<div style='text-align:left'> - -<div style='display:block; margin:1em 0'> -Updated editions will replace the previous one—the old editions will -be renamed. -</div> - -<div style='display:block; margin:1em 0'> -Creating the works from print editions not protected by U.S. copyright -law means that no one owns a United States copyright in these works, -so the Foundation (and you!) can copy and distribute it in the United -States without permission and without paying copyright -royalties. 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