FILICES. 671 



134. P. arachnoidea, Kaulf. Leaf 8-pinnatisect, sericeous or villous beneath : ulti- 

 mate segments oblong-linear, or oblong, blunt, adnate at the base, most abruptly produced 

 downward into a transversely half-elliptical or lanceolate auricle, distaut : rhachis harry : 

 petiole pale, with "12" bundles; membranaceous part of the revolute margin glabrous, 

 distant from the rib.— Segments l'"-3'" broad, variable in length. — Hab. Jamaica (Ag.) ; 

 Trinidad !, Cr., heights of S. Anne ; [Cuba ! : Venezuela !, Guiana !, Ecuador !, Peru !, 

 Brazil!]. 



Series 2. Aspleniese. — Sori dorsal, decurrent along veins, or covering the surface. 



19. T.ENITIS, Sw. 



Sori continuous, lining the margin of the leaf, or parallel to it, confined to a special ana- 

 stomosis of the veinlets, naked. — Leaves narrow, entire, or forked-pinnatipartite with entire 

 segments. 



135. T. angustifolia, R. Br. Leaf chartaceous, linear-lanceolate, entire, tapering at 

 both ends, glabrous : veins in sub-4-serial, narrow meshes, devoid of appendages ; sori juxta- 

 marginal, very little distant from the flat edge, decurrent to near the tapering leaf-base. — 

 Book. Gen. t. 77. A .— Pteris, Sw. Pteropsis, Desv— Leaf H'-4" long, 9"'-4"' broad, 

 " pendulous." — Hab. Jamaica !, Macf, Pd., on rocks and trees ; S. Vincent !, Guild. ; 

 Trinidad !, Pd. ; [Cuba ! and Mexico to equat. Brazil ! j Galapagos !]. 



136. T. lanceolata, R. Br. Leaf coriaceous, lanceolate, entire, undulate-flexuose, 

 glabrous, tapering into a short petiole : network of veins irregular, provided with appendages ; 

 sori lining the margin, slightly embraced by its revolute edge, confined to the upper part of 

 the leaf. — Plum. Fil. t. 132. Fee, Polypod. t. 8. G— « Pteris, L. Pteropsis, Lesv. Neu- 

 rodium,i%. — Leaf l£"-6" long, 12"'-6"' broad about the middle. — Hab Jamaica !, Macf., 

 Pd., on trees ; [Cuba 1 to French islands ! ; Belize !]. 



137. T. farcata, W. Leaf rigid-chartaceous, distantly pinnaliparte-3-2-fd, tapering 

 at the base of the narrow, fertile part, bearing scattered, appressed scales beneath, shortly 

 petioled, or sessile : segments and rhachis linear, or oblong-linear : veins 2-fid, usually free 

 (except at the fertile anastomosis) ; sori lining the margin (or transversely confluent), slightly 

 embraced by the revolute edge, confined to the upper part of the segments. — Plum. Fil. 

 <• 141. Fee, Polypod. t. 8. A. — Pteris, L. Cuspidaria, Fie. Dicranoglossum, J. Sm. — 

 H'-3"high. 



«• Leaf tapering into the sessile base : segments oblong-linear below the tapering summit, 

 8"'-4"' broad. 



&■ subpinnatifida, Fee. Leaf tapering into a short petiole: segments linear, 2"'-4'" 

 broad.— Hook. Grev. Lc. t. 7. 



Hab. Trinidad !, Sch., Pd., on trees ; [Cuba ! ; Panama 1 to Guiana ! and equat. Brazil]. 



20. VITTARIA, Sm. 



Sori continuous, sunk into a groove, inserted into a special anastomosis of veinlets, either 

 parallel to the margin of the narrow, entire leaf, or within its duplicate margin itself. — 

 Veins simple between the midrib and the anastomosis of the groove : plaits along the latter 

 replacing an indusium. 



138. V. lineata, Sw. Leaf long, rigid, obtusely costate beneath ; sori shortly distant 

 from the margin.— Plum. Fil. t. 143 : sori wrongly at the margin. Schk. Crypt, t. 101. 

 b. sin —Pteris L —Leaf l'-2i' long, l"'-2'" broad ; son usually more distant from the 

 midrib than from the margin, rarely equidistant from both.—HAB. Jamaica !, Motion, Wits., 

 Pd., common on trees ; S. Vincent !, Guild., Barbadoes !, Sw. ; [all tropical countries to 

 Florida and the Cape !J. 



21. ANTROPHrUM, Kaulf. 



Son continuous upon distinct parts of the network of veins, in several lines not reaching to 

 the base, the midrib, or the margin of the entire leaf.-Yeins m a network, devoid m our 

 species of veinlets or appendages ; sori linear, naked, or lined wxlh plaits. 



