I'lLICES. 701 



*** Sori single in each segment. 



307. P. trlehomaiioides, Sw. Leaf pinnatisect, elastical-chartaceous, pilose with 

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

 lai'ly 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 priinaiy vein at its base. — Schk. Crypt, t. 

 10. «K.— P. Iruncicola, a:/.— 2"-6"(-8")long; segments li"'-l"' long, V"-l"' broad.— 

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

 Guild. ; Trinidad !, Lockh. ; [Cuba ! to French islands I ; Pauama ! to Ecuador ! and Brazil! ; 

 Juan Fernandez !]. 



308. F. exiguuiUj Gr. {n. sp). Leaf pinnatisect, elastical-chartaceous, glabrous, 

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

 entire or often^nnicrenate at the upper rounded margin, distatit, but contiguous at the nar- 

 rowly decurrent, broadly adnate base, lowest decrescent, more distant : primary vein %-fid : 

 sori single, terminal on its auterior branchlet. — Rhizome capillary ; leaves csespitose 4"-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 !, 

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



B. Leaf pinnatifid. 



809. P. comptonifolium, Besv. Leaf pinnatifid to one-third or one-fom-th, oblong- 

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

 ported by a slender petiole ; lobes obliquely ovate, bluntish : sinus ovate : veinlets 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. {nonZ.), 

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

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

 Hab. Jamaica !, Macf., Bancr. ; [Portorico 1 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 ((roniophlebium and 

 Phlebodium.) 



* Sori \-serial. 



310. P. piloselloides, L. Leaves chartaceous, diform, hairy vrith scattered, palea- 

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

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

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

 pendage (or " at its anastomosis with a recurrent veinlet "). — Plum. Fil. i. 118. Hook. Gen. 

 t. 51. anahjl. — Leaves scattered along a filiform, long rhizome, 6"'-lB"'(-2i",) long, stertile 

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

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



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

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

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

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

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

 8"'-2" long, sterile 5"'-4"', fertfle %'" broad.— Hab. Trinidad (Metten.) : [Venezuela ; 

 Brazil!]. 



312 P. salicifolium, ?r. i;^// coriacsOM*, glabrous, lanceolate or lanceolate-lineai-, 

 bluntish narrowly tapering into the subsessile base: larger meshes sub-1 -serial; sori 

 1-serial, terminal ou a simple appendage or at its anastomosis with a recurrent vemlet.— 

 Rhizome creeping, with rusty, usually appressed scales ; leaves scattered, with a petiole-like. 

 base, 4"-14" long, 5"'-2"' broad.— Hab. Jamaica!, Wiles; [Cuba! to Brazil!; G^lapa, 

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



