FILICES. 701 



*** Sori single in each segment. 



307. P. trichomanoides, Sw. Leaf pinnatisect, elastical-chartaccous, pilose with 

 scattered hairs chiefly beneath (or glabrate), shortly petioled or subsessile ; segments regu- 

 larly alternate, spreading, very shortly oblong or ovate, rounded, entire, contiguous by the 

 decurrent, broadly adnate base, lowest decrescent : veins apparently simple : sori single, 

 lateral, approximate to the upper margin of the primary vein at its base. — Schk. Crypt, t. 

 10. sin.—V. truncicola, KL— 2"-6"(-8") long; segments H"'-l"' long, l'"-J"' broad.— 

 Hab. Jamaica !, Mac/., Wiles, Pd., on trees of the highest mountains ; S. Vincent !, 

 Guild.; Trinidad!, Lockh.; [Cuba 1 to French islands !; Panama ! to Ecuador! and Brazil! ; 

 Juan Fernandez !]. 



308. P. exiguum, Gr. (n. sp ). Leaf pinnatisect, elastical-chartaceous, glabrous, 

 subsessile or shortly petioled : segments regularly alternate, spreading, half-ovate, blunt, 

 entire or often unicrenate at the upper rounded margin, distant, but contiguous at the nar- 

 rowly decurrent, broadly adnate base, lowest decresceut, more distant : primary vein 2-fid: 

 fori single, terminal on its anterior branchlet.— Rhizome capillary ; leaves cscspitose i"-2" 

 long, flexuose : segments 1"'— £"' long, i'" broad, their points 1'" distant from each other: 

 single anterior branch of the vein near its base about half as long as it. — Hab. Jamaica !, 

 rd., on trees on the summit of the Blue Mountains, very rare. 



B. Leaf pinnatifid. 



309. P. comptonifolium, Desv. Leaf pinnatifid to one-third or one-fourth, oblong- 

 lanceolate, cuneate at the base, tearing scattered hairs, or glabrescent, membranaceous, sup- 

 ported by a slender petiole : lobes obliquely ovate, bluutish : sinus ovate •. veiulets free 

 (" rarely a few anastomosing "), with a single, often reduced, anterior branchlet, which is 

 terminated by the sorus. — Hook. Grev. Ic. t.42. — P. scolopendroides, Hook. Grev. (nonL.). 

 P. trifurcatum, L. .- this name is taken from a monstrosity, figured by Plumier (Fil. t. 138). 

 — 8"-12" long; blade 6"-8" long, 1" broad, upper margin of the lobes about 3'" long. — 

 Hab. Jamaica !, Macf, Bancr. ; [Portorico ! to Ecuador !]. 



C. Leaf entire. 



% 1. Veins and veinlets in a loose network ; sori at or below the summit of free (some- 

 times reduced) or anastomosing appendages of the meshes (Goniophlebium and 

 Phlebodium.) 



* Sori 1-seiial. 



310. P. piloselloides, L. Leaves chartaceous, difform, hairy with scattered, palea- 

 ceous down, sterile ovate-lanceolate or ovate-oblong (rarely oblong-lanceolate), blunt or 

 oluntish, cuneate at tlie petioled base, fertile lanceolate, tapering into the petiole: larger 

 meshes in the fertile l-serial; sori hairy, 1-serial along the midrib, terminal on a single ap- 

 pendage (or " at its anastomosis with a recurrent veiulet ")• — Plum. Fil. I. 1 18. Hook. Gen. 

 t. 51. analyl.— Leaves scattered along a filiform, long rhizome, 6"'-18'"(-2*") long, slertile 

 4"'-6"', fertile 2"'-3'" broad : petiole 3"'-6"' long.— Hab. Jamaica !, Wiles, Pd. ; Domi- 

 "ica !, Imr., S. Vincent !, Guild. ; [Cuba ! to French islands ! ; Venezuela ! to Ecuador !]. 



311. P. vaccinifolium, Fisch. Langsd. Leaves coriaceous, difform, glabrescent, sub- 

 sessile, or shortly petioled, sterile ovate-oblong or lanceolate-oblong, blunt, cuneate at the 

 base, fertile lanceolate-linear, tapering at both ends: meshes not visible on the pol.shed 

 surface ; sori glabrous, 1-serial, distant from the midrib, sunk into the leaf, terminal on 

 simple appendages."-Habit of the preceding, but petiole l'''-2" long ; leaves usually 

 8"'-2" long, sterile o"'-4"', fertile 2"' broad.— Hab. Trinidad (Metten.) ■. [Venezuela ; 

 Brazil!]. 



312. P. salicifoHum, W. Leaf coriaceous, glabrous, lanceolate or lanceolate-linear, 

 Muntish, narrowly tapering into the subsessile base: larger meshes sub-1-scnal; sori 

 1-serial, terminal ou a simple appendage or at its anastomosis with » recurrent y let- 

 Rhizome creeping, with rusty, usually appressed scales ; leaves sratte^d, w th a pet.ole-l.ke 

 base, 4"-U" long, 5"'-2'" broad.— Hab. Jamaica!, Idles; [Cuba! to Brazil!; Galapa- 

 gos ! ; S. Helena ! ; tropical Africa !]. 



