704 FILICES. 



324. C. arborea, Sm. " Unarmed ;" leaves 3-pinnatisect : secondary segments pinn'ati- 

 partite, subsesaile, serrate at the acvmiinate summit, tertiary falcate-oblong, bluntish, cre- 

 iiulate-repand, lower fertile from tbe base to beyond the middle ; md-usitim cireurmdssile 

 near the top, at length hemispherical, with the margin entire : receptacle columnar, entire. 

 — Plum. Fil. t. 1. 2. Hook. G-en. t. 33. — Polypodium, L. C. Grevilleana, Mart. C. 

 elegans, Heward. — Trunk " 10'-12' high, 6" thick " [Plum) ; ultimate segments 6"' long, 

 li'" broad ; " petiole scaly." — Hab. Jamaica 1, Bancr., Wils., Al. ; S. Vincent !, Guild. ; 

 [Cuba! to Brazil!]. 



325. C. Serra, W. " Muricate :" leaves 2-pinnatisect : secondary segments pinnati- 

 partite, sessile, serrate at the narrowly acuminate summit, tertiary falcate-oblong, bluntish, 

 serrulate above, lower fertile from the base to or beyond the middle ; indusium circumscis- 

 sile at the middle, at length shallow cup-shaped, entire at the margin ; receptacle clavate, 

 at length often 2-lobed. — HooJc. Spec. t. 9. A. — C. arborea, Ks. {Disphenia, Pr.). — ^Trunk 

 " 30' high, or more " {Pd.) ; ultimate segments 4"'-6"' long, 1"'-1^"' broad.— Hab. Ja- 

 maica I, Pi^., Hartw., in woods above Bath, in mountain-woods, S. Mary's; Dominica!, 

 /mr., S. Vincent !, Guild.; [Cuba! to French islands ! ; Venezuela to Brazil]. 



326. C. Tussarii, Besv. Leaves 3-pinnatisect : secondary segments pinnatipartite, 

 sessile, serrate at the acuminate sammit, tertiary subfalcale-oblong-linear, blontisb, entire 

 or serrulate at the upper fart, glaucous beneath, yer^i/e near the base only : rhachis hairy, 

 unarmed; indusium iurstvng to the base into broad irregular valves : receptacle globose, 

 entire. — Ultimate segments 4'" long, 1'" broad. — Hab. Jamaica ! {Tuss.) ; S. Vincent !, Bory ; 

 [Guadeloupe!]. 



327. O. muricata, W., Kaiilf. Leaves 2-pinnatisect : secondary segments pinnatipar- 

 tite, sessile, obtusely serrate at the short, contracted, blunt summit, tertiary oblong, blunt, 

 cr^Ka^f?, or obtusely serrate, yj?r^27^ to about the middle; rhachis muricate ; indusium cut 

 to the base into irregular fragments : receptacle globose, entire. — Plum. Fil. t. 4. — C. Im- 

 rayann, Hook. I ; but his figure {Spec. t. 9. B.) approaches the preceding by subentire seg- 

 ments. — Trunk " 15'-20' high " (Wils.) ; ultimate segments 4'" long, IV" broad ; "petiole 

 scaly." — Hab. Jamaica !, Wils., Wiles, Bancr., in the mountains, Catherine's Peak, at 5000' 

 alt. ; Dominica; [French islands !, Sieb. Mart. 374]. 



328. C. gracilis, Gr.(n.sp.). Leaves 2-piunatisect : primary and secondary segments 

 petioled, the latter pinnatipartite, obtusely serrate at the tapering-linear, bluntish point, 

 tertiary oblong, blunt, serrate at the recurved margin, slightly dilated at the base, glabrea- 

 cent, fertile to near tlie summit, or beyond the middle ; rhachis hairy : petiole muricate ; 

 indusium bursting into subregular valves to near the cup-like base : receptacle small, en- 

 tire. — Allied to C. divergens, Kze., but segments much smaller. Trunk " very slender " 

 (Pd.) ; prickles of the petiole short, scattered on both sides ; primary segments ovate-oblon", 

 1 4" distant from each other, their petiole 1" long, secondary ovate-lanceolate, inferior 2", 

 their partial petiole 2"'-3"' long, ultimate inferior 4"'-5"' long, l"'-li"' broad.— Hab. 

 Jamaica!, Pd., Fox Gap. 



329. C. tenera, Hook. " Unarmed ;" leaves 2-pinnatisect : primary segments shortly 

 petioled, their rhachis margined chiefly above by the narrowly decurrent secondary seg- 

 ments, the latter sabsessile, pinnatipartite, shortly acuminate, serrate at the point, tertiary 

 oblong, blunt, serrulate at the summit, glabrous, /ec<i/e to about the middle ; indusium at 

 length irregularly shallow cup-shaped, or dimidiate, subentire : receptacle minutely globose. 

 — Alsophila, /. Sm. — In the same leaf the indusia pass from the character of Cyathea into 

 the dimidiate scale of such species as have hitherto been referred to Hemitelia : thus the 

 description of C. multiflora, Sm. {Hemitelia, R. Br.) would agree, except in the larger size 

 of the segments. Secondary segments 2" long, 8'" broad (in C. multiflora said to be 4'' 

 long, 1" broad), ultimate 4'" long, l\"' broad; sori distant. — Hab. S. Vincent!, Caley ; 

 [Darien (c^. Sm.)'] ; C. multiflora, Sm. : Jamaica, [Guiana]. 



47. ALSOPHILA, R. Br. 

 Character of Cyathea, but indusium reduced to a palea, or none, rarely dimidiate-inferior. 



330. A. aspera, R. Br. Leaves 2-pinnatiseot : petiole prickly, curved below with 

 shining, pale, ooate-lanceolate scales: secondary segments pinnatipartite, sessile, serrate at 



