FILICES. 705 



tie ttcurainate point, tertiary oblong, blunt, serrate, glabresceut, fertile to beyond the 

 middle ; rhachis muricate, secondary villous above ; indusimn conspicuous, half embracing 

 the sorvs, subpersistent : receptacle globose. — Plum. Fit. t. 3. Hook. Gen. t. 21. — 

 Cyathea, Sw. — Very prickly ; secondary segments 3" long, 6"'-8"' broad : petiolar scales 

 10'"-14"' long, 4'" broad; receptacle in oui- speciraeus (Wr. Cub. 950, 1062) undivided: 

 iadusiura much larger than in the following species. — Hab. Jamaica 1, Wils., in mountain- 

 woods, at 3000' alt. ; [Cuba ! to Caribbean islands]. 



331. A. nitens, /■ Sm. Leaves 2-pinuatisect : petiole muricate, laiffi lanceolate-linear, 

 acuminate scales, which are confined to its base ; secondary segments pinnatiild, or deeply 

 pinnatifid, shortly petioled, or subsessile, bluntly serrate at the acuminate point, tertiary 

 subfalcate-oblong, bluntish, subentire, or bluntly serrulate above the middle, glabrous, fer- 

 tile to beyond the middle ; rhachis distantly muricate, secondaiy hispidulous-pubescent 

 above, glabrous beneath ; indusium minute, concealed by the sorus : receptacle globose, 

 hairy.— S/. t. 56. Hook. Grev. Ic. t. 213. 215. Sook. Spec. t. 19. S.— Polypodium 

 spinosum, L. (ex Ic. SI.). A. aspera, ffooi. Grev.- — Trunk 20-30' high j secondary seg- 

 ments 3"-2" long, 6"'-10"' broad: petiolar scales 6"'-8"' long, V" broad.— Hab. Ja- 

 maica I, P(/., WiVsj, frequent ; S. Kitts, Dominica!, S.Vincent, (jMJW.,Montserrat; [Cuba!, 

 Wr. 951, 1061]. 



332. A. infesta, Kee. Leaves 2-pinnatisect ; petiole " prickly only below :" secondary 

 segments pinnatipartite, subsessile, serrate at the acuminate point, tertiary subfalcate-oblong, 

 bluntish, bluntly serrate above, or subentire, hairy chiefly on the minutely paleaceous midrib 

 beneath, or glabresceut, fertile to beyond the middle : rhachis unarmed, secondary hispidu- 

 lous-pubescent above, pubernlous beneath ; indusium replaced by a minute palea : receptacle 

 globose, hairy. — A. phalerata, $, Hoolc. (Dominica!: ^. ^/ja/emte. Mart., from his figure 

 has a narrowly winged, secondary rhachis). A. caracasana, Kl. — Little different from the 

 preceding, but by deeper-divided secondary segments and the unarmed rhachis ; position of 

 sori variable, in the same specimen either in the middle between the rib and margin, or more 

 approximate to the latter ; secondary segments 3" long, 8"'-12"' broad.- — Hab. Jamaica !, 

 Macf. ; Dominica !, Imr. ; [French islands ! ; Panama !, New Granada !, Peru 1, Spruce, 

 4349, Guiana!]. 



333. A. ferox, Pr. Leaves 2 -pinnatisect : petiole prichly, pubescent above, "bearing 

 ovate, acuminate, deciduous scales :" .secondary segments pinnatipartite, sessile, serrulate at 

 the acuminate point, tertiary subfalcate, oblong-linear, blunt, serrulate above, puberulous 

 on the ribs beneath, fertile to beyond the middle : rhachis distantly prickly, secondary pu- 

 besceut above, pubernlous or glabresceut beneath, tertiary pubescent on both sides ; indu- 

 sium none ; receptacle globose, hwiy.—Mart. Ic. Crypt. Bras. t. 48. — A. arraata. Mart, 

 {non Pr.). A. aculeata, Kze. ! — Secondary segments 3" long, 6"'-8"' broad; prickles 3'"- 

 6'" long.— Hab. Trinidad {J. Sm.) ; [Panama !, Guiana I, Brazil !]. 



384. A. araiata, Pr. Leaves 2-pinnatisect : petiole prickly, " closed at the base with 

 long, brown scales :" secondary segments pinnatipartite, sessile, serrate at the acuminate 

 point, tertiary subfalcate, oblong-linear, blunt, serrate to the base, villous chiefly on the 

 ribs beneath, fertile to the summit : rhachis muricate, second and tertiary pilose ; indusium, 

 none : receptacle globose, hairy. — Mart. Ic. Crypt. Bras. t. 49. — Polypodium, Sm. A. 

 Swartziana, JlfoW.- Trunk "15'-30' high;" secondary segments 4"-3" long, 8"'-6"' 

 broad. — Hab. Jamaica I, Pd., in mountain-woods, S. Georges ; [Panama ! Venezuela !, 

 Brazii !]. 



48. HEMITELIA, R. Br. (emend.). 



Sori globose, dorsally inserted beyond the forking or near the marginal summit of simple 

 veinlets : indusium dimidiate-inferior, broadly embracing the soras, persistent : receptacle 

 prominent. — ^Leaves pinnatisect, rarely i-pinnutisect : veinlets of Cyathea, but the lowest 



mostly anastomosing. , ., t , ■, t tt x i- 



Several species, presenting the habit of Cyathea and Alsophda, I exclude from Memitelza 

 (e g S. capensis, Parkeri, guianensis, etc.), and, according to the insertion of tbeir son, 

 woiSd transfer them io Alsophila, n.^a.v A. aspera: hence mj Hemiteha is the same as 

 Cnemidaria, Pr., while Bemitelia, Pr., is drawn to Alsophila. An exception however to 

 this arrangement (as often occurs at the limits of Pern-genera) is presented by Alsophila 

 Weigeltiala, Roem. (PI. Kappler. 1355) : for in this species 1 find the son differently 



