FILICES. 691 



dium, L. P. subincisum, W. (Alsophila martinicensis, Sieb. Mart. Crypt. Bras. t. 64), P. spec- 

 tabile, Kaulf, P. Karstenianum, Kl. : forms 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. — Hab. 

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

 Spring Plantation, Fort Steward, Bluefield Mountains ; [Cuba ! to French islands !, Sieb. 

 Mart. 346 ; Venezuela ! to Valdivia !]. 



249. A. amplum, Metten. Leaf 2-pinnatiscct with deeply pinnatipartite secondary 

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

 rate, inferior pinnatifid, adnate or shortly decurrent at the equal base : veinlets pinnate, 

 simple or forked; indusium minute, cordate or suppressed. — SI. t. 57. f. 3 (Polypodium 

 effusura, Sw., FL, 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. Sm. — A. effusum, Gr., 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., A I. ; Dominica !, Mr., S. Vincent !, Guild. ; Trinidad !, 

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



250. A. hirtum, Sw. Z<?«/2-pinnatisect with pinnatipartite-2-pinnatipartite segments, 

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

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

 forked; indusium minute, reniform or suppressed. — Plum. Fit. t. 43. Kze. Farnkr. t. 

 135. — A. nemorosum, W. Polypodium crystallinum, Kze.— Slender, 6"-l 2" high; ulti- 

 mate segments 1 "'-]£'" long, f"'-l'" broad. — Hab. Jamaica !, Pd., March, on moist, shady 

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



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

 at the stmts (Conf. Polypodium caudatum, Kaulf. ; P. decussatum, L. ; P. I/ewardii, 

 Gr.). 



251. A. sanctum, Metten. Slender; leaf pinnatisect or 2-pinnatisect 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 puberulous ; sori subequidistant from 

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

 I- 49. /. 2.— Polypodium, Sw.— 6"-12" high ; secondary segments 2'" long, lowest ofteu 

 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 —Plum Fil t. 47-— A. polyphyllum, Kaulf A. ( sanctoidcs, Fee. Polypo- 

 dium concinnum, Sieb —V-2' 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! Wils., AL, Blue Mountains to 7000' alt.; [Cubal to French islands; 

 Mexico ! to Brazil !]. 



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

 natipartite, subsessileTlowest decrescent, secondary oblong or oblong-linear, blunt, entire, 

 nearly horizontal, lowest not enlarged: veinlets sung: rhachis ^pnb^us;^ 

 sium small, reniform, ciliate or suppressed.-^. ^/- Bra*, t. 34. lolypooium pubes- 

 cens, Radd.— U'-3' high ; secondary segments 3 -I long. 



„ . f f-. x a -""'J" s f 11 ' 1K - "iteLi-u = b . , t f roin cu lt,vated specimen! of 



midrib than from the margin.— Link s fern is kuowu ww r 



