686 FILICES. 



—Radd. Fil. Bras. t. 54: the form with 2-serial, 54-bis: 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, Peruv. 4758): from the synonyms given in 

 Hook. 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. : 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, Kze. ! (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. thelyyteroides, Mich. : both producing a lew Athyrium-sori be- 

 long to that section).— li'-3' high ; lowest segments longest, 6"" long, 1|" broad ; longest 

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

 to Brazil !]. 



ftt Veins pinnalely divided, lowest penultimate ones on the inferior side of their rib ; 



leaf stout. 



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

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

 late above : vein/ets pinnate, simple or 2-partite, most 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 anterior double. — Segments usually 8"-12 long, 

 3"-4" broad; lowest sori 4'" long.— Hab. Jamaica!, Wils. ; [New Granada !, Ecuador!]. 



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

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

 ferior (or most) beyond it, or usually pinnatipartite, pinnatisect below : lobes oblong, blunt, 

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



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

 thirds as far as the distance of the margin of the lobe, lowest anterior double. — Plum. /*'• 

 t. 18. 19. — A dubium, Hook.', (exclus. synon. Schk. etc.). — Intermediate between A. cos- 

 tale and A. radicans, distinguished from the former by uarrower segments ; sori 2 loug. 



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

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

 other forms are Wr. Cub. 1038. 1044. 



/3. bipinnatiseclum. Leaf 2-pinnatisect below with slightly pinnatifid secondary segments ■ 

 middle primary segments pinnatipartite, superior pinnatifid, lower 10"-12" long, 2-3 

 broad.— A. dubium, Hook., e.g. Wr. Cub. 1039. A radicans, Hook. Gen. t. 55. /. 4 [non 

 Schk.). 



Hab. Jamaica!, Pd. ; S.Vincent!, Guild.; [Cuba! to French islands!; Mexico! to 

 Brazil !]. 



223. A. radicans, Schk. Leaf 2-pinnatisect -. segments oblong-linear, acuminate, se- 

 condary inferior pinnatifid to the middle : lobes oblong or subquadrate-oblong, serrulate, suu- 

 truncate-blunt, superior passing iuto serratures : veinlets pinnate, most fertile, simple, lower 

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

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

 t. 76 : the summit of the leaf, the primary segments of which are pinnatipartite. — A. dubiuiu. 

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

 by Metteuius, as doubtful, and exclude also A. bulbiferum, Beruh. (N. Act. Erford. 18U-. 

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

 Lower primary segments 8"-12" long, 4"-6" broad, secondary inferior 2" long, 8" broad , 

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



*** Leaf 2-B-pinnatisect ; sori short ; veins pinnalely divided, free, 



224. A. australe, Brackenr. 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 ir° m 

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

 often lacerate.— Schk. Crypt, t. 61 . Hook. Ic. t. 978.— Allantodia, R. Br. A. Brownii, Hook. 

 A. hiana, Metten., Hook.! (Diplazium, Kze.). A. sylvaticum, Moore (ex Hook. PI- &'"• 



