FILICES. 697 



gramme, but has the habit of a common Aspidium. — 3'-4'high; secondary segments 

 6"'-5"' long, ].£'" broad.— Hab. Jamaica!, Hartw., Pd., mountains of Port Royal, West- 

 moreland. 



Leaf pinnatisect with pinnatifid or serrate segments : lower veinlets approaching, 

 contiguous, or anastomosing at or below the sinus, the other free, ejceurrent. 



283. P. tetragonum, L. Leaf pinnatisect : segments lanceolate, pinnatifid to one- 

 half-one-third, shortly peliolulate, lowest little or not decrescent : lobes oblong or ovate, 

 blunt or bluntish, entire : veinlets simple, lowest pair anastomosing below the sinus, sending 

 a vein into the sinus, following pair contiguous at the sinus: rhachis Agonal; sori serial : 

 series extending to the lowest veinlets. — Variable, distinguished from similar forms of 

 Aspidium molle, Sw., by petiolulated segments, and from A. abbreviatum, Schrad. (non 

 Hook.), perhaps not sufficiently by the anastomosis of the veinlets. — 2'-5' high ; segments 

 9"-3" long, 12"'-6'" broad. 



«. Glabrescent (down simple) : segments 3"-6" long, pinnatifid to about the middle : lobes 

 spreading : veinlets 6-10-jugal — Si. t. 48. /. 2. Schk. Crypt, t. 18. b. 



P. Plumieri, J. Sm. Puberulous with stellate down ; segments 6"-9" long, pinnatifid to 

 one-third : lobes falcate-blunt : veinlets 10-12-jugal,— Plum. Pit. t. 21. 



Hab. Jamaica!, Macf; Dominica \,Im r., S. Vincent !, Guild. ; [Cuba! and Mexico ! to 

 Brazil and Peru !]. 



284. P. megalodus, Schk. Stout; leaf pinnatisect, somewhat rigid, stellate-puberu- 

 lons : segments oblong-lanceolate, coarsely serrate to one-fourth, petiolulate, lowest as 

 large : serratures falcate, broadly ovate or oblong, bluntish or blunt, entire : veinlets simple, 

 several lower pairs anastomosing below the sinus, forming a vein that runs into the sinus : 

 rhachis puberulous, Agonal; sori serial: series extending often to the lowest veinlets. — 

 Schk. Crypt. I. 19. b.— 4'-6' high ; segments 12"-8" long, U" broad: serratures 4"'-2'" 

 broad : veinlets 8-1 5-jugal.— Hab. Trinidad !, Cr. ; [Cuba !, Wr. 1010, to French islands ! ; 

 Venezuela !]. 



285. P. crenatum, Sw. Leaf pinnatisect, slightly hispidulous : segments oblong- 

 lanceolate, crenate-serrate, subsessile : serratures truncate-appressed : veinlets simple, about 

 10-jugal,/m? and anastomosing without order : rhachis obtusely sub-4-gonal; sori distant, 

 chiefly on the lower veinlets. — Plum. Pit. t. 111. — P. meniscioides, Liebm. — 2'-3i' high; 

 segments 4-8-jugal, longer 6" long, H" broad. — Hab. Jamaica!, Wils., March ; S.Vin- 

 cent !, Guild. ; Trinidad !, Lockh. ; [Cuba ! and Mexico ! to Venezuela ! and Guiana !]. 



286. P. flavopunctatum, Kaulf. Leaf pinnatisect, glabrescent, pellucid-dotted with 

 yellowish points : segments oblong-linear, acuminate, coarsely cuneate-serrate, sessile at 

 the oblique, upward produced base, shortly decurrent, lower largest : veinlets distant, 

 3-6-jugal, free, lowest second or third pair approaching at the sinus: rhachis pa- 

 leaceous, obtusely 4-gonal below ; sori distant, chiefly on the lower veinlets. — Plum. Fit. t. 

 38.— Aspidium rotundatum, W— 3'-6' high : lower segments 6"-10" long, 8'"- 12'" broad. 

 —Hab. Jamaica (Rook.); Dominica!, Imr., S. Vincent!, Guild.; [French islands!; 

 Mexico to Guiana! and Peru]. 



287. P. obliteration, Sw. ! Leaf pinnatisect, glabrous : segments lanceolate, serrate, 

 or chiefly the uppermost pinnatifid-serrate, tapering at both subentire ends, lower petiolu- 

 late, as large, superior adnate-decurrent : veinlets simple, 6-10-juga], lower anastomosing 

 and forming a vein that runs into the sinus : rhachis puberulous, sub-3-gonal ; sori approxi- 

 aate to the middle, serial : series extending to the lower veinlets.— Approaching Aspidium 

 Imrayanum, Hook., but segments not upward produced at the base and with a long spe- 

 cial vein below the sinus, often unconnected with the appendage of the lowest anastomosis. 

 — 3'-4' high; segments 6-10-jugal, 6»-8" long, 1" broad.— Hab. Jamaica !, Sw., in moun- 

 tain-woods. 



*** Feins costate. 



288. P. blechnoides, Sw. Leaf pinnatisect : segments lanceolate entire below the 

 serrate, narrowly acuminate apex: veins costate, approximate simple or 2-part.te, no 

 veinlets; sori dorsal toward the base of the ve.ns or scattered. -Book. Gen 1.42, B. 

 Hook. Grev. Ic. t 232.— Alsophila, Book. V. rosscatum, // . (Amphidcsnnum, Schotl). P. 



