FILICES. 675 



oUiquely poiuted.— i'/am. Fil. t. 115.— Acrostichum, Sw. G. acuminata, i'r— Leaf 3' 4' 

 bug : segments 8"-10" long, 3", uppermost 5" broad. fertUe 4"-3" long, 12"'-6"' broad.— 

 Hab Jamaica !, Wils., Pd., Bancr., in moist woods, Manchester 1 [Cuba 1 to French 

 islands !]. 



28. CHRYS ODIUM, Fee. 



Son covering the under side of the upper, flat segments of a pinnatisect leaf, nalced : in- 

 fenor segments sterile, conform.— Stout Ferns; veins in a network, midrii almost excur- 

 rent. 



,. ^^^- C- ▼"Iffarej ^«e. Leaf coriaceous, glabrous : segments oblong-lanceolate, or oblong- 

 Imear, blunt, or bluntish, cuneate at the base, entire : network of veins simple.— P^mm. Fil. 

 t. 104. Schk. Crypt, t.\,^. b. — Acrostichum aureum, Z.— S'-IO' high : segments 6"-13" 

 long, l"-2" broad.— Hab. Jamaica I, Wils., in marshes and bogs : [all tropical countries 

 and a little beyond their borders to Florida, Natal, Hongkong], 



29. RHIPIDOPTERIS, &/io«. 



Sori covering the under side within the margin of a palmatinerved, roundish-emarginate 

 (or 3-lobed) leaf-blade, naked: sterile leaf diflrarm, palmatipartite (rarely palmatinerved- 

 subentire). — All leaf-ribs dichotomous,free. 



159. R. peltata, Sehott. Sterile leaf several times dichotomously palmatipartite: 

 segments linear, ultimate short, pointed, 1-nerved, veinless : petiole Aea&sc ; fertile blade 

 reniform: sterile margin crenulate.— P^am. Fil. t. 50. a.— Rhizome filiform, creeping; 

 leaves scattered, sterile about 1". fertile 4"'-3"' broad : petiole 2"-l" long.— Hab. Ja- 

 maica I, Pd., on trees and rocks, S. Georges ; Dominica I, Imr. ; [Cuba ! and Mexico ! to 

 Guiana I and Peru !]. 



30. ACROSTICHUM, L. 



Sori covering the under side of a flat, entire, leaf-blade, naked : sterile leaf nearly con- 

 form. — Midrib in our species tapering, or disappearing at the summit: petiole mostly 

 jointed at the base. 



* Veins in a simple, narrow network (Hymenodium, Fee). 



160. A. crinitunij L. Leaf elliptical, blunt, or bluntish, quite entire, long-petioled, 

 chartaceous; blaekish-ciliate and 'pilose : bristles long, dilated at the blade, crowded along 

 the petiole and margin, scattered on the surface : veins in a simple network ; fertile blade 

 conform, but smaller. — Plum. Fil. t. 125. Hook. Grev. Ic. t. 1. — Blade 15"-3", petiole 

 12"-3" long. — Hab. Jamaica !, Pd., on rocks, in shady woods, S. Georges ; Dominica I, 

 Imr., S. Vincent !, Guild. ; [Cuba ! to French islands I, on trees] . 



** Veins simple, or forked, nearly parallel, free, rarely connected by a single marginal 



arch (Blaphoglossum, Sehott). 



f Leqfdliate with rusty bristles. 



161. A. Tillosum, Siw. Leaf lanceolate-oblong, with a bluntish point, nndulate-re- 

 pand, or subentire, petioled, chartaceous, rusty-ciliate and -pilose: bristles dilated at the 

 base, crowded along the thin margin, scattered on the surface: veins simple and forked, 

 free-excurrent ; fertile blade lanceolate, pointed. — Plum. Fil. t. 127, med. inf. Book. Grev. 

 Ic. t. 95. — A. uudulatum, Kaulf. {ex Sieb. Mart. 346). A. Moritziauum, Eat. PI. Wr. 

 1046: non «.).— Sterile blade 8"-^" long, 1J"-1" broad, fertUe 3"-2" long, 8'" broad ; 

 petiole 4"-2"(-] 0") long, ruaty with crowded (or scattered) bristles. — Hab. Jamaica !, Pd., 

 Bancr. ; Dominica !, Imr.; [Cuba I to French islands !, Venezuela !, Ecuador 1], 



162. A. apodum, Kaulf. Leaf lanceolate, shortly acuminate, with a bluntish point, 

 repand or quite entire, long-tapering into the subsessile base, chartaceous, rusty-ciliaie and 

 pilose, or glabrescent : veins forked, or simple, excurrent into the thickish margin ; fertile 

 blade linear-lanceolate, pointed.— /Too*. Grev. Ic. t. 99.— Sterile leaf li'-8" long, 14"-1" 

 broad, fertile shorter, 5"'-6"' broad. — Hab. Jamaica !, Macf, Pd., in woods near Bath ; 

 Montserrat, S. Vincent !, Quild. ■ [Cuba !, to cqtiat. Brazil !]. 



