690 FILICES. 



241. A. ascendens, Heward ! Leaf 3-pinnatisect, chartaceous i tertiary sterile seg- 

 ments oblong-lanceolate, pointed, serrate, obliquely cuneate at the entire base, lowest supe- 

 rior slightly larger, fertile contracted, minutely roundish: veinlets pinnate ; sori occupying 

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

 dimorphic state of Hicsonia coniifolia. llhizoma scandent ; leaf 4-1', lowest tertiary seg- 

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

 woods. 



242. A. coriaceum, Sw. Leaf 3-pinnatisect, coriaceous : tertiary segments oblong- 

 lanceolate, bluntish, pinnatifid-subentire, cuneate at the slightly oblique base, lowest supe- 

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

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

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

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

 Mauritius]. 



243. A. mexicanum, Pr. " Leaf 2-3-pinnatisect : ultimate segments oboyate-oblong, 

 blunt, pinnatifid-subentire, cuneate at the slightly oblique base, lowest superior little larger t 

 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 !, Mac/., Pd., JFils.; [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, pinnatifid-serrate (or sub- 

 entire), obliquely cuneate at the entire base, lowest superior larger : v( inlets forked or 

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

 dium, L. Phegopteris portoricensis, Fee : the form with naked sori. Ph. sericea, Eat. ■' •' 

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

 ments 4"'-12'" long.— Hab. Jamaica !, Macf, Pd.; [Cuba ! to French islands !]. 



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

 elongated: ultimate ovate-oblong or oblong, blunt, pinnatijid-subentire, obliquely cuneate 

 and often upwards auricled at the base, lowest superior little larger : veinlets forked, lower 

 pinnate; indusium. reniform-roundish. — Hook. Spec. t. 259. — A. cicutarium, Kze. in Pi. 

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

 Woodf. ; [Portorico ! to Brazil !]. 



246. A. effusum, 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, cuneate at the slightly oblique base, serrate, 

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

 roundish, often suppressed.— SI. t. 57./. 1. 2. Schk. Crypt, t. 26. b. c— Polypodium, Sw. 

 Synops. P. divergens, Sw. (PI. Wright. 831). A. excultum, Metten. ! (A. bxtuin, Montz)^ 

 a pnbernlous form. — Stout ; lowest ultimate divisions of the lowest primary segments 4 

 Ion?, tertiary segments ovate at the base. — Hab. Jamaica !, Mac/., Hartw., Wiles, At. ; 

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



247. A. denticulattun, Sw. Leaf i-pinnatisect with pinnatipartite special segments, 

 shining-chartaceous : ultimate segments cuneate, mucronate-few-dentaie : veins sunk, forked 

 or simple; indusium reniform-orbicular, with a short sinus.— Hook. Lc. t. 923.— Polypo- 

 dium, Sw. A. Icetum, Sw. A. Klotzschii, Hook.— Rigid, l£'-2' high; lowest ultimate 

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



a. Ultimate segments cuneate-elliptical, mucronate. 



0. rigidissimum, Hook. Ultimate segments shortly spathulate-linear. 



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



** Leaf Z~2-pinnatisect ; segments equal-sided : veins free. 

 248. A. villosum, Sw. Very stout ; leaf 3-pinnatisect, pilose, hispidulous or glabres- 

 cent, except at the hairy rhachis : tertiary segments oblong, blunt, pinnatijid, or inferior pin- 

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

 or simple ; indusium large, cordate-orbicular, often abortive or suppressed.— Plum.. FH. f ■*• 

 bchk. Crypt. i.M.b. inf. Hook. Spec. t. 264. Metten. Fit. Lips. t. 17-/. 10.— PolyP " 



