690 FILICES, 



241. A. nsceaAens, ffeward ! Leaf 3-pmnatisect, diartaceous : tertiary sterile seg- 

 ments oblong-knoeolate, pointed, serrate, obliquely euneate ai the entire base, lowest supe- 

 rior slightly larger, /ar^ife contracted, minutely roundish, -. veinlets pinnate ; son occupying 

 each contracted segment : indmium cordate-orbicular. — Hook. Spec. t. 224. — Possibly a 

 dimorphic state of Sicsonia coniifolia. llhizoma scandent ; leaf 4'-l', lowest tertiary seg- 

 ments 8"'-10"' long, fertile 1'" diam. — Hab. Jamaica !, Pd., Wils., At., on trees, in moist 

 woods. 



242. A. eoriaeeum, Sw. Leaf 3-pinnatiseet, coriaceous : tertiary segments oblong- 

 lauceolate, bluntish, pinnatifid-subentire, euneate at the slightly oblique hose, lowest supe- 

 rior little larger : veinlets sunk, superior forked, inferior pinnate ; sori large, occupying the 

 space between the midrib and margin : indusium peltate-orbicular. — Schle. Crypt, t. 50.-^ 

 Polypodium, Sie. — Stout; lowest tertiary segments 6"'-8"' long; sori 1'" diam. — Hab. 

 Jamaica !, Pd., on rocks ; [Cuba I to Patagonia ! and the whole southern temperate zone to 

 Mauritius]. 



243. A. mesicanum, Fr. " Leaf 2-3-pinnalisect : ultimate segments obovate-oblong, 

 blunt, pinnatifid-subentire, euneate at the slightly oblique base, lowest superior little larger : 



^veinlets forked-dichotomous ; sori small : indusium orbicular, at length shortly cordate." 

 — Hook. Spec. t. 267. — " 2-3' high, variable; lowest ultimate segments 6" -10'" long." — 

 Hab. Jamaica !, Macf., Pd., Wils. ; [Mexico! to Ecuador]. 



244. A. pubescens, Sw. Leaf 2-3-pinnatisect, softly pilose beneath or at least at 

 the rhachis : ultimate segments ovate or ovate-oblong, pointed, pinuatifid-serrate (or sub- 

 entire), obliquely euneate at the entire base, lowest superior larger : veinlets forked or 

 simple ; indusium reniform-roundish or suppressed. — Hook. Qrev. Ic. t. 162. — Polypo- 

 dium, i. Phegopteris portoricensis. Fie : the form with naked sori. Ph. sericea, Eat. ! : 

 probably a form of it with bluntish segments. — 14'-2' high, variable; lowest ultimate seg- 

 ments 4"'-12"' long. — Hab. Jamaica!, 3/ac/!, Prf.; [Cuba ! to !Prench islands !]; 



245. A. funestum, £2e. Leaf 2-3-pinnatisect: lowest inferior secondary segments 

 elongated : ultimate ovate-oblong or oblong, blunt, pinnatifid-subentire, obliquely euneate 

 and often upwards aurieled at the base, lowest superior little laraier : veinlets forked, lower 

 pinnate; indusium reniform-roundish. — Hook. Spec. i. 259. — A. cicutarium, ^«e. in PI. 

 Kegel. ! {non Sw). — 1'-2' high ; lowest ultimate segments S"'-12"' long. — Hab. Trinidad !, 

 Woodf. ; [Portorico I to Brazil 1] . 



246. A. e£Fu5uin, Gr. Leaf 2{-?>)-pinnatisect with 2-pinnatipartite special segments 

 below : rhachis of the tertiary ones narrowly winged : quaternary segments passing gradually 

 into serratures above, the lower ovate-oblong, euneate at 1Jie slightly oblique base, serrate, 

 lowest superior little larger : veinlets pinnate, simple or forked ; indusium small, reniform- 

 roundish, often suppressed. — SI. t. ^l.f 1. 2. Sohh. Crypt, t. 26. b. c. — Polypodium, Sw. 

 Synops. P. divergens, Sw. (PI. Wright. 831). A. excultum, Metten. ! (A. Isetum, Moritz): 

 a pnberulous form. — Stout ; lowest ultimate divisions of the lowest primary segments 4'" 

 long, tertiary segments ovate at the base. — Hab. Jamaica !, Macf., Hariw., Wiles, Al. ; 

 S.Vincent!, Guild.; [Cuba! to Brazil!]. 



247. A. denticulatum, Sw, Leaf S-pinnatiseci uiith pinnatipartite special segments, 

 shining-chartaceous : ultimate segments euneate, mucronate-few-dentate : veins sunk, forked 

 or simple ; indusium reniforrti-orbicular, with a short smas.— Hook. Ic. t. 923. — ^Polypo- 

 dium, Sw. A. liBtum, Sw. A. Klotzsehii, Hook. — Rigid, 14'-2' high ; lowest ultimate 

 segments 2"'-3"' long, usually with a single sorus. 



a. Ultimate segments cuneate-elliptical, mucronate. 



fi. rigidissimum. Hook. Ultimate segments shortly spathulate-linear. 



Hab. Jamaica !, Macf, Wils., Pd., Lamb, i [Cuba 1 to Brazil !]. 



** LeafZ~%-pinnatisect; segments equal-sided : veins free. 



248. A. Tillosum, Sw, Very stout; /e«/3-pinijatisect, pilose, hispidulous or glabres- 

 cent, except at the hairy rhachis : tertiary segwienis oblong, blunt, pinnatifid, or inferior piu- 

 natipartite, superior euneate, uppermost entire : lobes rounded at the summit : veinlets forked 

 or simple ; indusium large, cordate-orbicular, often abortive or suppressed, — Plum. Fil. t. 27. 

 Schk. Crypt, t. 46. *. inf. Hook, Spec. i. 264. Metten. Ml. Lips. t. 17. /. 10.— Polvpo- 



