658 FILICES. 



none; indusiam margined beyond the blade : limb shortly 2-lipped. — Hook. Grev. Ic. t. 

 236. — Leaf 2"'-6"' diam. ; petiole less than 1'" long. — Hab. Jamaica \, Pd. ; Trinidad !, 

 Lochh., dr., on trees, growing often intermingled with T. muscoides; [Cuba to French 

 islands ! ; Guiana 1, Peru!]. 



52. T. membranaceum, L. Leaf cuneate-roundish, or obovate, extrorsely lacerate- 

 denticulate or lobed, glabrons, hearing marginal 2-loied-peltate scales, striated between 

 thefldbellate-forlcedveins : no midrib : petiole very short, black-fiUous ; indusium included : 

 limb shortly 2-lipped.— P&»«. Fit. t. 101 .A. Kee. Farnhr. tM.f. 1.— Leaf 6"'-2i", pe- 

 tiole l"'-2"' long. — Hab. Jamaica !, Shepherd, on moist rocks ; S. Kitts, Dominica !, Imr., 

 S. Vincent !, Guild. ; Trinidad ; [Cuba !, to French islands ! ; Darien !, Venezuela !, Guiaoa, 

 Peru !]. 



9. HYMBNOPHYLLUM, Sm. 



Sori marginal : indusium dorsally 2-lipped : tube short, or none : column included, rarely 

 exserted, inserted at the summit of a simple or shortly 2-fld veinlet, fertile to the summit 

 or naked below. — Habit of Trichomanes ; leaves mostly divided and petioled, scattered 

 along a filiform rhizome, turning usually brown in drying ; segments with a simple vein. 



I omit several West Indian species of Hymenophyllum and a few of Trichomanes, named 

 by V. d. Bosch upon the same materials as I had before me, aud published lately after his 

 death (Nederl. Kruidk. Arch. 1863) ; for from the descriptions they are apparently not well 

 founded. 



* Leaf-segments glabrous. 



53. H. asplenioides, SW. Leaf ohlong-lanceolate, pinnatifid, cuneate at the base, 

 glabrous ; lobes oblong, blunt or eniarginate, entire, flat ; indusium terminal, i-lipped to the 

 base : valves roundish, entire. — Leaf l"-2" long, 4"'-6"' broad : petiole 6"'-2" long. — 

 Hab. Jamaica !, Bancr., on trees, in high mountains ; [Cuba ! to Brazil X]. 



54. XI. abruptum. Hook. Leaf ovate, deeply pinnatifid, not decurrent, glabrous : 

 lobes oblong, retuse or 2-fid, entire, ilat ; indusium terminal, 2-lipped to the middle, sunk 

 below the broadly rounded, entire lips.— £bo*. Spect. 31. .B.— Leaf 8"'-li" long, (>"'-12"' 

 broad : petiole 6'" long. — Hab. Jamaica !, Wits., Pd. ; [Cuba ! : intermingled with H. 

 Irevipes, Kze. (Wr. Cub. 958, leaf palmatipartite), and with H. brevistipes, Liehm. (Wr. 

 Cub. 1068, leaf 2-pinnati-palmatifid) ; [Venezuela!, equat. Brazil}. 



35. H. polyanthos, Sm. Leaf Z-B-pianatipartite vrith the ultimate segments lobed, 



narrowly or not decurrent, glabrousj lobes shortly oblong, blunt, entire, flat; indusium 



' terminal, 2-lipped to the subtruucate base or sunk below the middle : lip ovate, blunt, or 



roundish, entire. — Hook. Grev. Ic. t. 128. — H. Grevilleanum, Pr. — Variable, 4"-12" high, 



i"-2"(-6"') broad. 



a. Leaf long-deourrent ; indusium free, subtruucate at the base : lips ovate, blunt. 



j3. Schomburglcii, Pr. Leaf long-deourrent ; indusium free, except at the slightly cuneate 

 base : lips roundish. 



y. clavatum, Sw. Leaf not decurrent ; indusium free, except at the slightly cuneate 

 base : lips ovate or roundish. — Hook. Grev. Ic. t. 127. — H. abietinum. Hook. Grev. H. 

 jalapense, Cham., Schlecht. ! : except some specimens passing into a. H. fraternum, Pr., 

 sec. V. d. Bosch. 



S. Kobautianum, Pr. Leaf long-decurrent ; indusium half-sunk, cuneate at the base : 

 lips half-round.— H. decurreus, Sieb. Mart. 250. H. protmsum. Hook. {Spec. t. 37. B): 

 a form with the column at length exserted. 



Hae. Jamaica !, Pd., on trees and rocks in the mountains ; Dominica !, Imr. ; S. Vin- 

 cent !, Guild. : [Cuba ! and Mexico ! to Brazil ! ; East Indies ! to New Zealand !]. 



56. H. undulatum, Sw. Leaf linear-oblong, 2-^-pinnatipartite, shortly or not de- 

 , icurrent, glabrous : rhachis crispate-winged or naked at the base : lobes oblong, blunt, en- 

 ' tire, crispate-undulate ; indusium terminal, 2-lipped to near the slightly cuneate base : 

 lips broadly rounded, entire, or repaud. — Hook. Ic. i. 964 : the form with 3-pinnatipartite 

 leaves.— H. flaccidnm, F. d. Bosch /— 2"-6"long, flaccid, pendulous, shortly petioled, 4"'- 

 12'" broad.— Hab. Jamaica !, Meneies, in high mountains, in ravines ; [Cuba ! aud Mexico ! 

 to Peru !]. 



