FILICES. 679 



3-forked : petiole stout ; sori confluent.— £/. t. 45./. 2. Plum. Fil. t. 144.— Acrostichum, 

 I.— 2'-4' high ; petiole shining-purple ; special segments 4"-2£" long, 4"'-3'" broad. — 

 Hab. Jamaica!, Macf., Pd., Al., on river-sides; [Cuba! and Mexico to Peru! and 

 Brazil !]. 



** Leaf-segments pinnatipartite : petiole slender, 

 f Leaf yellow- or white-powdery beneath, glabrous. 



180. G. tartarea, Desv. Leaf chartaceous, white-powdery beneath, pinnatisect : seg- 

 ments pmnatipartite, secondary subcontiguous, shortly decurrent, spreading, ovate-oblong, 

 or ovate, bluntish, entire, crenate, or lower crenate-pinnatifid : veins flabellate-dichotomous ; 

 sori confluent.— Acrostichum, Sw. Hemionitis dealbata, W.—V-2' high; petiole black- 

 shining: blade 4" broad at the base. — Hab. Jamaica ! ; Dominica \,Imr. ; [French islands !, 

 Mexico to Peru .']. 



181. G. ornithopteris, Kl. Leaf rigid -chartaceous, white- (or yellowish-) powdery 

 beneath, 2-pinnati-pinnatisect : segments usually produced into a narrow, bluntish, suben- 

 tire or less divided appendage, secondary distant, nearly horizontal, adnate, oblong, blunt, 

 entire or crenate, revolute at the margin, upward decrescent, lower usually pinnatipartite 

 with short, contiguous, tertiary segments : veins flabellate-dichotomous ; sori confluent. — 

 G. calomelanos, Eat. PI. Wr. 777 (including a yellowish-coloured variety) ; Schlechtend. 

 Pi. Schied. and Mett. PL Lechl. 2027. G. dealbato-calomelanos, Begel ! {non G. distans, Li.). 

 Allosorus farinosus, Kze. (Farnkr. t. 103) : a less divided form with a paler petiole (PI. 

 Lechl. 2022).— 1£'-4' high; petiole usually purple : blade 6"-12" broad at the base.— 

 Hab. Jamaica !, S. Vincent ! ; [Cuba ! and Mexico ! to Peru !]. 



182. G. calomelanos, Kaulf. Leaf rigid-chartaceous, white- (or yellow-) powdery 

 beneath, 2-pinnati-pinnatisect : segments acuminate, secondary shortly decurrent, spread- 

 ing, most serrate-pinnatifid with acute serratures or lobes, lanceolate or o* ate-oblong, lower 

 often pinnatipartite : veins flabellate-dichotomous: sori confluent.— SI. t. 30./. 2. 53./. 1. 

 Plum. Fil. t. 40. Schk. Crypt, t. 5. sup.— Acrostichum, L. A. ebeneum, L. G. Marteusii, 

 Bory : the yellow -coloured variety (Wr. Cub. 975).— 1'-4' high; petiole black or purple : 

 blade 3 "-8" "broad at the base.— Hab. Jamaica!, Wils.; [Cuba to Trench islands \,Sieb. 

 Mart. 236 ; Mexico ! to Brazil !]. 



183. G. chrysophylla, Kaulf. Leaf rigid-chartaceous, golden-yellow- (or white-) 

 powdery beneath, 2-pinnati-pinnatisect -. segments bluntish at the tapering point, secondary 

 subcontiguous, shortly decurrent, spreading, ovate or ovate-oblong, most serrate-pinnatifid 

 with blunt serratures or lobes, lower pinnatipartite : veins flabellate-dichotomous ; sori con- 

 fluent. — Plum. Ml. t. 44. — Acrostichum, Sw. G. peruviana, Desv. (Kze. Farnkr. t. 32) : 

 the white-coloured variety. G. L'Herminieri, Kze. : a form with ovate-oblong segments and 

 less blunt lobes (Sieb. Mart. 237).— l'-li' high; petiole purple-shining: blade 8"-3" 

 broad at the base. — Hab. Jamaica (Kaulf.) ; Dominica !, Imr. ; [Haiti to French islands !, 

 Mexico to Brazil ! and Peru !]. 



184. G. sulforea, Desv. Leaf membranaceous-chartaceous, pale-yellow-powdery be- 

 neath, 2-pinnatisect : secondary segments decurrent, lowest pinnatipartite with few divisions, 

 ultimate obovate, cuneate at the base, palmatifid or dentate at the subtruncate summit, with 

 the teeth or lobes usually pointed: veins flabellate-dichotomous; sori confluent. — Schk. 

 Crypt, t. 4. dextr.— Acrostichum, Sw.—V-(li'-6") high ; petiole purple or pale: blade 

 2 " broad at the base. — Hab. Jamaica !, Pd., AL, Hartw., on wet, shady banks; [Cuba!]. 



ft Leaves devoid of powdery secretions beneath, glabrous. 



185. G. chserophylla, Beso. Leaf membranaceous, glabrous, Z-pinnatisect : tertiary 

 tegments pinnatipartite-palmatifid, cuneate at the base, ultimate oblong, pointed or bluntish : 

 veins dichotomous, branches single in each ultimate segment or lobe ; sori usually forked, 

 with the branches diverging.— Hook. Orev. Ic. t. 45.— G. leptophylJa, Eat. PI. Wr. (non 

 Desv.).— Delicate, 3"-10" high ; ultimate segments \'"-\'" broad, the longer 1" -If" long. 

 — Hab. Jamaica !, Pd. ; [Cuba ! to Buenos Ayres !]. 



