FILICES. 677 



S. Georges : Trinidad !, Cr.; [Cuba ! to Brazil ! ; A. martinicense, Desv. : French islands ! 

 and Mexico ! to Brazil !]. 



168. A. latifolium, Sw. Leaf lanceolate-oblong, pointed, cuneate at the base, quite 

 entire, much longer than the petiole, rigid-chartaceous, glaucescent, glabrescent with distant, 

 minute scales : veins excurrent into the thickish, narrow margin : petiole glabrescent ; fer- 

 tile blade oblong-lanceolate (or ovate), bluntish, cuneate at the base.— Plum. Fit. t. 135. 

 — A. longifolium, Jacq. A. alismifolium, Eat. PI. Wr. 966, 969.— Sterile blade 12"-4" 

 long, H"(2"-l") broad, fertile 4"(-l") long, 1" broad, petiole of both 6"'-H" long.— Hab. 

 Jamaica !, Macf, Pd., on trees, S. Georges ; Dominica !, Imr., S. Vincent !, Guild. ; 

 Ltuba! and Mexico ! to Brazil! and Peru !]. 



169. A. Schomburgkii, Fee {ex Kze. in PI. Kegel. !). Leaf elliptical, or elliptical- 

 oblong, bluntish at the contracted summit, tapering into the short petiole, quite entire, rigid- 

 chartaceous, glabrous, or with a few minute scales : veins excurrent into the thickish narrow 

 margin, thickish below the delicate summit : petiole scaly, or glabrescent ; fertile blade 

 lanceolate-oblong, pointed.— Sterile blade 12"-6" long, 3"-2£" broad, fertile 4"-7" long, 

 1 -2" broad, petiole of the former l"-2", of the latter 2"-5" long.— Hab, Trinidad !, Pd., 

 in woods, Arima ; [Guiana !, on trees]. 



170. A. conforme, Sw. Leaf small, ovate-oblong, or lanceolate-oblong, pointed, con- 

 tracted at the base, about as long as the petiole, repand-entire, coriaceous, glabrous, or 

 with a few, minute scales : veins excurrent into the thickish, narrow ma/rgin : petiole glabres- 

 cent ; fertile blade oblong, bluntish at both ends.— Sw. Synops. t.l.f. 1.— Sterile blade 2"-3" 

 (-1") long, 10"'-12"'(-6"') broad, fertile 2"-4"(-l") long, 10"'-6"'(-4"') broad, petiole of 

 the former 4"-2"(-l"), of the latter 4"-2'\-H") long.— Hab. Jamaica!, Pd., Wils., on de- 

 cayed trees, S. Georges ; Dominica !, Imr., on Mount Conliabon ; [Mexico ! to Brazil ! S. 

 Helena !, Tristan d'Acunha !, Cape !, East Indies !]. 



171. A. Feei, Bory. Leaf small, lanceolate, blunt, tapering into the slender petiole, 

 Sl nuate-crenate above, chartaceous, glabrous : veins distant, forked, terminated at a small 

 distance from the thin or narrowly revolute margin : petiole few-scaly ; fertile blade shorter 

 Man its petiole, lanceolate, or oblong, bluntish. — Ehizome filiform, with scattered leaves; 

 sterile blade 1" long, 3"'-4'" broad, fertile 8"'-5"' long, 2'" broad, petiole of the former 

 6"'-8'", of the latter 1"-1£" long. — Hab. Dominica !, Imr., on Mount Conliabon ! ; [Gua- 

 deloupe !], 



31. POLYBOTRYA, Humb. Bonpl. 



Sori on veiny, confluent receptacles, covering the under side or both sides of the contracted 

 leaf-segments, naked : sterile leaf difform. — Stout Ferns; leaf in our species 2-Z- pinnatisect, 

 and veinlets free. 



172. P. caudata, Kze. Leaf 2-pinnatisect below, pinnatisect above, glabrous, charta- 

 ceous : primary segments oblong-lanceolate, passing gradually upward from a pinnatisect or 

 pinnatifid division into serrulate, acuminate apices : secondary segments and lobes obliquely 

 pointed: veinlets forked, and simple, excurrent; fertile leaf 2-pinnatisect : segments fertile 

 on both sides. — Lowest primary segments about 8" long, secondary 2"-l" long, 6'" broad, 

 lower secondary fertile ones 2" long.— Hab. Trinidad I, Pd., Woodford, on trees ; [Mexico 1 

 to Guiana ! and Brazil !]. 



173. P. osmundacea, Humb. Bonpl. Leaf 3 -pinnatisect, glabrous, chartaceous : 

 secondary segments oblong-lanceolate, acuminate, ultimate obtusely serrate, bluntish : vein- 

 lets simple (or forked), not excurrent ; fertile leaf 3-pinnatisect : segments fertile an the 

 under side, but often confluent above by the contraction of the segment.— Hook. Gen. t. 78. 

 B. : analyt.—V. cvlindrica, Kaulf t the state with the sori conflueDt above.— Lower se- 

 condary segments 4'"-8" long, tertiary l"long, 4"'-6'" broad, lower tertiary fertile ones 1'" 

 long.— Hab. Jamaica!, Wiles, AL, Pd., near Fox's Gap, "twining up the trees;" [Cuba I 

 to Brazil !]. 



32. OLFERSIA, Badd. 



Sori covering both sides of the contracted segments of a 2-pinnatisect leaf, naked : sterile 



