46 AUIANTUM. 



nearly entire, sterile ones crenato-lobate. — y. pinnules larger 

 more firm subchartaceous slightly lobed glaucous green. 



Hab. West Indian Islands, probahly general. Jamaica, Swartz, Mc 

 Fadj/en, IVilson, Bancroft, Di.slin, Mc Nab, Purdie. Cuba, Pocppif/ {Kzc. 

 in herb, noslr.) Otto, {Kloisch. in Herb, nostr. n. 233). Guadeloupe, 

 UHermoniei; {Herb. n'>.slr. ex. Herb. Paris). St. Vincent, L. GuihUnj. 

 Bahamas, Swaiuson. Antigua, Dr. Nicholson. Central America, Sec- 

 mann. — /3. Acapulco and Realego, Dr. Sinduir. — y. Veraguas, Seewann. — 

 Pinnules generally about three quarters of an inch long. Although the 

 term " rhomboid " aptly expresses the general form of these pinnules, yet 

 many of them, especially the uppermost and the sterile ones, depart from 

 this form, as is common to other Adianta : the lol)ing too is more or less 

 deep, and the plant varies much in size. Some of our smallest specimens 

 approach our larger forms of A. fragile ; and, as in that species, the pin- 

 nules are, when dry, extremely caducous. Swartz compares it with A. 

 Capillus Veneris and A. trapeziforme, and some states do exhibit pinnules 

 of such a form as to justify such an opinion. Others again border on the 

 more lax state of A. concinnum. — Var. |3. has shorter and rounder pinnules, 

 our var. y, larger and more chartaceous ones. 



* * * Cristatum grotip.f (Sp. 94—108). 



94, A. crisiaium L. ; frond subtriangular-ovate bi-snbtri- 

 pinnate secondary pinnae subappvoxiniate lanceolate cau- 

 dately acuminate terminal one elongated lowest pair generally 

 bipartite, pinnules close-placed horizontally patent rigid- 

 chartaceous dark olive brown striately veined when dry 

 obliquely oblong-ovate acute generally antrorsely subl'alcate, 

 superior base truncate inferior cuneate glabrous gradually 

 smaller upwards, terminal one elongated very narrow, 

 sterile ones coarsely serrato-dentate, sori semioval or more 

 rarely oblong chiefly confined to the superior margin (if 

 extended round the point the apex becomes very obtuse) 

 rachis fusco-pubescent, stipes dull black minutely muricato- 

 scabrous. Linn. Sp. PI. j)- 1558. [excl. si/n. Sloane Jam. p. 

 55, y: 1). Willd. Sp. PL p. v. 1558. Sw. Si/n. Fil. p. 123 ? 

 [cerlainly exci. Plum. Fil. t. 96). A. striatum, Sw. Fl. Ind. 

 Occ.p. 1717. Syn. Fil. p. 124. Jacq. Coll. 3, p. 245. Ic. 

 Ear. t. 646. Kze. in PL Poep. exsicc. in Herb, nostr. Plum. 

 FiL <. 67 ? 



Hab. Jamaica, most abundant. Caraccas, Jacquin. Cuba, Poeppig 

 {Kze. in Herb, noslr.) A harsh-feeling and stiff-growing plant and easily 

 recognized, especially by the tapering pinnae, the sharp pointed pinnules, 



f Species having more or less affinity with the well-known A. cristatum 

 of the West Indies ; but which, as a group, cannot well i)e defined in words. 



