FILICES. 691 



diuni, L. P. subincisum, W. (Alsophila martinicensis, Sieh. Mart, Ciypt. Bras. t. 64), P. spec- 

 tabile, Kaulf., P. Karsteaiauum, Kl. : foi'ms without indusium, distinguished by variable cha- 

 racters. Variable in the down {e.g. the rhachis pilose or pubescent), the sori close to the midrib 

 or between it and the margin, confined to the lower anterior veinlet or several in each lobe, 

 the ramification of the veins, and the division of the leaf. " Petiole 8'-12', blade 8'-10' long " 

 (Wills), the former woody ; lower tertiary segments 6'" long, 2'" broad or larger. — Had. 

 Jamaica!, Macf., Pd., Bancr., AL, Wils., rare, in moist woods, at 3-4000' alt., e.ff. Cold 

 Spring Plantation, Fort Steward, Bluefield Mountains ; [Cuba! to French islands I, /SaeJ. 

 Mart. 346 ; Venezuela ! to Valdivia I]. 



249. A. amplusu, Metten. Leaf 3-pinnatisect lyith deeply pinnatipartite secondary 

 segments : rhachis glandalar-puberulous, paleaceous : tertiary segments oblong, blunt, ser- 

 rate, inferior pinnatijid, adnate or shortly decurrent at the equal hose : veinlets pinnate, 

 simple or forked ; indusium mmute, cordate or suppressed. — SI. t. 57. /. 3 (f olypodium 

 efiusum, Sw., Ft., non Synops.). P. Sloanei, Kze. : the characters, observed by Sir W. 

 Hooker, viz. the petiole not tubercled, and the narrow, silky palese, are confirmed by our spe- 

 cimens, but scarcely constant, and the indusium is often suppressed in both forms. P. lach- 

 nopodium, J. Stn. — A. effusum, 6r., is similar, but its secondary segments are twice as broad 

 at the base. 2'-3' high, broad at the base ; inferior tertiary segments 4"'-6"' long, 2'" 

 broad. — ^Hab. Jamaica !, Pd., Wils., Al. ; Dominica !, Imr., S. Vincent !, Guild. ; Trinidad I, 

 Sch. ; [Cuba I to French islands I ; Mexico to New Granada]. 



250. A. hirtum, Sw. iea;^ 2-pinnatisect with pinnatipartite-2-pinnatipartite segments, 

 glandular-puberulous : rhachis pubescent, paleaceous : ultimate segments ovate, pointed, 

 entire, adnate and shortly decurrent at the equal base, 1-2-sorous : veinlets few, simple or 

 forked; imd/usium minute, reniform or suppressed. — Plum. Fil. t. 43. Kze. Farnkr. t. 

 135. — A. nemorosum, W. Polypodium crystalliuum, .ffisg.— Slender, 6"-12" high ; ulti- 

 mate segments 1'"-]^"' long, |'"-1"' broad. — Hab. Jamaica I, Pd., March, on moist, shady 

 rocks; [Cuba!; Guatemala; trop. Africa]. 



*** Leaves pinnatisect with pinnatipartite segments : veins free, lowest veinlets distant 

 at the sinus (Conf. Polypodium caudatum, Kaulf. ; P. decussatum, L. ; P. Hewardii, 

 Gr.). 



251. A. sanctum, Metten. Slender; leaf pinnatisect or 2-pianatiseet with respect to 

 the 2 lowest, larger secondary segments, puberulous beneath at the ribs only: primary seg- 

 ments pinnatipartite, lowest much decrescent, secondary oblong-lanceolate, bluntish, decur- 

 rent, subentire : veinlets simple or forked : rhachis pnberulous ; sori subequidistant from 

 the 'midrib and margin, small : indusium " minute, reniform, ciliate " or suppressed. — SI. 

 t. 49. /. 2. — Polypodium, Sw. — 6"-12" high ; secondary segments 2'" long, lowest often 

 as large, approximate to the rhachis. — Hab. Jamaica!, Macf., Bancr., Pd., Al., on rocks; 

 [Cuba!]. 



/^ 252. A. conterminum, W. Leaf pinnatisect, puberulous or glandular beneath, or gla- 

 brescent : primary segments pinnatipartite or pinnatifid, acuminate, lowest much decrescent, 

 secondary oblong, obliquely bluntish, subentire, lowest .usually larger : veinlets simple : > 

 rhachis puberulous ; sori nearer to the margin than to the midrib : indusium small, reni- 

 form ciliate.— P&m. Fil. t. 47.— A. polyphyllum, Kaulf. A. sanctoides. Fee. Polypo- 

 dium' coucinnum, Sieb.—V-'i! high ; secondary segments 2"'-l '" long, lowest often twice as 

 large approximate to the rhachis, but not separated from the rest as in the preceding. — 

 Hab! Jamaica I Wils., AL, Blue Mountains to 70«)' alt. ; [Cuba ! to French islands ; 

 Mexico I to Brazil!]. ' 



253 A oligoearpum, Kth. Leaf pinnatisect, puberulous : primary segments pin- 

 natipartite ' subsessile, lowest i.&<s&iQ.wA, secondary oblong or oblong-Unear, blunt, Wi^ire, 

 nearly horizontal, /owe«i! «o< enlarged: veinlets simple: rhachis hoary-puberulous ; indu- 

 sium small, reniform, ciliate or suppressed.- JJ«^rf. Fil. Bras. t. 34.-Polypodium pubes- 

 cens, Radd.—\y-i' high ; secondary segments 3"'-2"' long 



o..Spccialsegmentsoblong-linear,i'''^broad; son near the mai-gin. 



a Kaulfussti Lk. Special segments oblong, l^"'-!'" broad ; son more distant from the 

 midrib than from the margin.— Link's Fern is known to me from cultivated specimens of 



