692 FILICES. 



the Berlin garden : these have an indusium, which is suppressed in young specimens from 

 Dominica. 



Hab. Jamaica !, Mac/., Wi/s., Al., Blue Mountains at 7000' alt. (a) ; Dominica I, Imr. 

 (0), S. Vincent !, Guild.; [Cuba! and Mexico! to Chili !]. 



254. A. limbatum, Sw. Leaf pinnatisect, glabreseent : primary segments pinnatipar- 

 tite, sessile, bearing a gland at the base beneath, secondary oblong or oblong-lanceolate, 

 blunt, crenulate or entire, lowest downward produced : veiulcts mostly simple : rhacbis gla- 

 breseent ; sori infraterminal, half-covered by the reflexed leaf-margin : indusium reniform- 

 roundish. — 5/. I. 49. /. 1. Kze. Farnkr. t. 51. — A. Breutelii, Metten. (Amauropelta, Kze.). 

 A, Sprengelii, Kaulf. ! : a form with entire segments and a more delicate indusium. — 4 -6 

 high; secondary segments 4"'-5'" long. — Hab. Jamaica (SI.); S. Kitts (Brentel), S. Vin- 

 cent!, Guild.; [Portorico!, French islands !, Sieb. Mart. 355 ; Venezuela!]. 



255. A. aureovestitum, Gr. Leaf pinnatisect, glabreseent, paleaceous at the ribs 

 beneath : primary segments pinnatipartite, subsessile, secondary oblong-linear, blunt, sub- 

 distant, inferior serrate : veinlets simple : rhachis and petiole densely clothed with rusty 

 scales ; sori equidistant from the midrib and margin •. indusium minute, deciduous. — Hook. 

 Spec. t. 246. — JSJephrodium, Hook. — To be compared with 4. ctenitis, Lk., from Brazil.— 2 

 high; inferior secondary segments 6"'-5'" long. — Hab. Jamaica!, Pd., Wils., Manchester; 

 [Cuba !]. 



From A. tetragonum, Metten. (A. setosum, EL !), I exclude the S. Vincent locality, 

 Guilding's Fern belonging to A. molle, Sw. — A. L'Herminieri, Metten. (Jamaica, Brentel) 

 is unknown to me -. it is apparently allied to A. limbatum, Sw., but pubescent. 



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

 contiguous or anastomosing at or below the sinus (Couf. Polypodium tetragonum, L. ; 

 P. megalodus, Scbk. ; P. crenatum, Sw. ; P. favopunctatum, Kaulf. ; P. oblitera- 

 tum, Sw.). 



256. A. invisum, Sw. Leaf pinnatisect, somewhat rigid, simply puberulous at the ribs 

 beneath: segments long, oblong-linear, acuminate, pinnatifid beyond (or to) the middle, 

 sessile, lowest little decrescent : lobes oblong, falcate acute, entire : veinlets simple, 1-2 

 lowest pairs contiguous (or approaching) at the sinus or along a plait below it : rhachis 

 simply puberulous or glabreseent, 3-gonal ; sori equidistant from the midrib and margin : 

 indusium reuiform-roundish. — <S/. t. 51. t. 50. f. 1. — Stout, variable; segments 12"-6 

 long, 12"'-8'"(-6'") broad. 



a. Segments pinnatifid to \-%, 12"'-8'" broad. — A. incisum, Sw. Herbar. ! (probably a 

 mistake in Swartz's autograph, instead of A. invisum). A. serra, Hook. (Wr. Cub. 1003). 

 A. macrurum, Hook., Fat. (Wr. Cub. 822. *1002 : both partly). A. macrurum, Kaulf ! 

 (A. subincisum, Sieb. Mart. 354), is a form of the same with the lowest pair of veinlets ap- 

 proaching, but a little distant at the sinus. Nephrodium schizotis, Hook. 1 : a pubescent 

 form with the lower secondary divisions larger. 



0. Schkuhrii. Segments pinnatifid to the middle, 8"'-6'" broad.— Schk. Crypt, t. 18.— 

 A. Serra, Eat. (ex parte, Wr. Cub. 1004). A. macrurum, Metten. in PI. Cub. Rugel. 



Hab. Jamaica (Sw.), common in woods ; Dominica !, Imr. ; Trinidad !, Sch. ; [Cuba . to 

 Brazil !]. 



257. A. Serra, Sw. Leaf pinnatisect, rigid, simple puberulous at the ribs beneath : 

 segments long, linear, acuminate, pinnatifid to the middle, sessile, lowest as large : lobes 

 ovate-deltoid, entire : veinlets simple, 1-3 lowest pairs contiguous along a plait below the 

 sinus •. rhachis simply puberulous or glabreseent, 3-gonal ; sori equidistant from the midrib 

 and margin -. indusium reniform-roundish. — SI. t. 48. /. 1. Kze. Farnkr. /. 59. — A. au- 

 gescens, Lk. (Wr. Cub. 923). Swartz's species was confounded by Kunze with the prece- 

 ding, but his description (" pinna? 3"'-4'" latitudine ") leaves no doubt -. Schkubr's figure 

 (Crypt, t. 33. b.) is doubtful, and may be a form of it with shorter segments. 2'-4' high ; 

 segments 5"-12" long, 3"'-4'" broad.— Hab. Jamaica!, Wils., Pd., in wet places, S. Anns, 

 S. Marys ; [Cuba !]. 



258. A. patens, Sw. Leaf pinnatisect, usually pubescent beneath -. segments lanceo- 

 late-acuminate, pinnatifid beyond (or to) the middle, sessile, lowest little decrescent : lobes 

 oblong, blunlUh, subentire •. veinlets simple, lowest pair contiguous (or approaching) at or 



