686 FILICES. 



--Radd. Fil. Bras. t. 54 : the form with 2-serial, 54-to ; the younger-state with single 

 sori. Hook. Gen. t. 55. /. 3 : superior segments, — A. striatum, L. Herb, (compared by 

 Shepherd), Hook.! {Wr. Cub. 1035, Spruce, Feruv. 4758) : from the synonyms given in 

 Hools. Spec. Fil. I exclude: 1° Plum. fil. t. 18. 19 (the origin of A. striatum, L. Spec, 

 Metten.). 2° A. caracasanum, W. (Fendl. Venez. 129. j3: all sori confined to the upper 

 part of their veinlet, hence distant from the rib and approaching the margin), Metten. Asplen. 

 t. 5. f. 17. 3°. A. decurtatum, TCze. ! (proving to be Spruce, Peruv. 4755 : segments 

 deeply pinnatifid to near the rhachis, sori oblong, 1'" long, distant from the rib, while they 

 approach it in the allied A. thelyjderoides, Mich. . both producing a few Athyrium-sori be- 

 long to that section). — li'-3' high; lowest segments longest, 6" long. If" broad; longest 

 sori 4'" long. — Hab. Dominica !, Imr., S. Viucent !, Guild., Barbadoes !, Hhepherd ; [Cuba ! 

 to Brazil!]. 



ttt Veins pinnately divided, lowest penultimate ones on the inferior side of their rib ; 



le^ stout. 



221. A, costale, Sw. Leaf pinnatisect : segments ohlong-lanceolate, acuminate, pin- 

 natijid to the middle, inferior beyond it : lobes oblong, blunt (or subfalcate-pointed), serru- 

 late above : veinlets pinnate, simple or 2-partite, 7aost fertile, lowest contiguous at the 

 narrow sinus ; sori linear, 2 lowest close to the midrib, the other to the vein, all extending 

 halfway to the margin of the lobe, lowest antei'ior douhle.^Segments usually 8"-12" long, 

 S"-4" broad; lowest sori 4'" long. — Hab. Jamaica!, Wils. ; [New Granada !, Ecuador!]. 



222. A. striatum, L. sp. (ex Plum.), Metten. Asplen. (non Hook.), leaf pinnati- 

 .seot-2-pinnatisect : primary segments oblong-linear, acuminate, pinnatifid to the middle, in- 

 ferior (or most) beyond it, or usually pinnaiipa7-tite, pinnatisect below : lobes oblong, blunt, 

 serrulate above or serrate : veinlets pinnate, simple, or lower forked and dichotomous, most 



fertile, lowest distant at the sinus ; sori linear, approximate to the vein, extending two- 

 thirds as far as the distance of the margin of the lobe, lowest anterior double. — Flum. Pit. 

 t. 18. 19. — A dubium. Hook. ! {exclus. synon. Schk. etc.). — Intermediate between A. cos- 

 tale and A . radicans, distinguished from the former by narrower segments ; sori '2'" long. 



o. Leaf pinnatisect, or the lowest segments pinnatisect again at the base : lower segments 

 6"-8" long, \i" broad.— A. dubium, var. pinuato-pinnatiiida. Hook., e.g. Wr. Cub. 847 : 

 other forms are Wr. Cub. 1038. 1044. 



/8. bipinnatisectum. Leaf 2-pinnatisect below with slightly pinnatifid secondaiy segments : 

 middle primary segments pinnatipartite, superior pinnatifid, lower 10"-12" long, 2"-S" 

 broad. — A. dubium. Hook., e.g. JPr. Cub. 1039: A radicans. Hook. Gen. t. 55. /. 4 {non 

 Schk.). 



Hab. Jamaica!, Pd. ; S.Vincent!, Guild.; [Cuba! to Fi'ench islands!; Mexico! to 

 Brazil !]. 



223. A. radicans, 5i;/i^. Leaf ^-pinnatisect : segments oblong-linear, acuminate, «e- 

 condary inferior pinnatifid to tbe middle : lobes oblong or snbquadrate-oblong, serrulate, sub- 

 truncate-blunt, superior passing into scrraturcs : veinlets pinnate, most fertile, simple, lower 

 distant at the narrow sinus ; sori oblong-linear, lowest anterior double, approximate to the 

 midrib, all extending from the vein as far as close to the margin of the lobe. — Schk. Crypt, 

 t. 76 : the summit of the leaf, the primai-y segments of which are pinnatipartite. — A. dubium, 

 Metten., Hook, ex parte, e.g. Fendl. Venez. 436 : but I regard Eaddi's figure (t. 58), quoted 

 by Mettenius, as doubtful, and exclude also A, bulbiferum, Bernh. (.t^. Act. Erford. 1803, 

 Asplcuium, f. 7), agreeing in the sori, but not in the entire, subdistant special segments. — 

 Lower primary segments 8"-ia" long, 4"-6" broad, secondary inferior 2" long, 8'" broad; 

 lowest sori 3"' long. — Hab. Jamaica ! (W.) ; [Venezuela ! to Brazil]. 



*** Leaf 2-3 ■pin.nati.secl ; sori short; veins pinnately divided, free, 



224. A. australe, Braekenr. Leaf 2-pinnatisect, deltoid at the base : secondary seg- 

 ments pinnatifid to the middle, inferior beyond it, equal at the base : lobes oblong, blunt, 

 serrulate or subentire : veinlets pinnate, simple, most fertile ; sori oblong, extending from 

 the vein to or beyond the middle of the lobe, lowest anterior double ; indusium "convex, 

 often lacerate. -:-&AA. Crypt, i. 61. Hook. Ic. i. 978.— AUantodia, R.Br. A. Brownii, Hook. 

 A. hi<ms, Metten., Hook.! (Diplazium, Kze.). A. sylvaticum, Moore (ex Hook. PI. hid. 



