17. TRICHOMANES, EUTRICHOMANES. 79 



crenate lobes ; main and secondary midribs tomentose ; lot. veins numerous ; 

 spurious venules none ; sori 2 to 6 to each lobe ; invol. sunk, the mouth scarcely 

 dilated ; recept. long, filiform. F. D. B. SuppL 2. p. 119. 



Hah. Trinidad and British Guiana. This and the two preceding are very closely 

 allied. 



39. T. Kaulfussii, Hk. & Gr. ; rhizome wide-creeping, strong, tomentose ; st. 

 2-4 in. 1., strong, compressed, winged above ; fr. 4-12 in. 1., 1^-2 in. br., ovate- 

 lanceolate-acuminate, once pinnatifid down to a broadly-winged rachis ; segm. 

 linear-oblong, rounded or acute, toothed, the largest 1 in. 1., J in. br.; main rachis 

 densely and the surface slightly hairy ; lot. veins of the segments 1 to 4 times 

 forked ; spurious venules none ; sori 2 to 12 to a pinna, tube more or less exserted, 

 mouth with two lateral projections ; recept. long, filiform. Hk. Sp. 1. p. 122. 

 T. lucens, Hie. & Gr. Ic. Fil. t. 10 (non Swartz). 



Hab. West Indian islands, Guiana, and N. Brazil. 



40. T. alatum, Swartz ; st. tufted, 2-4 in. 1., winged above ; fir. 3-12 in. 1., 1-4 

 in. br., lanceolate or ovate-lanceolate, bi-tripinnatifid ; main rachis winged 

 throughout ; pinnce lanceolate acute, cut more than halfway down to the rachis; 

 lobes often again sharply toothed ; texture delicately membranaceous ; rachis rather 

 hairy; ult. segm. with several lateral veins; spurious venules none ; son 2 to 12 

 to a 'pinna, terminal on the segments, the tube sunk, the mouth spreading but 

 scarcely two-lipped ; recept. long, filiform. Hk. Sp. I. p. 123. Hk. & Gr. Ic. 

 Fil. t. 21. T. attenuatum, Hk. Sp. I. p. 122. t. 39. C. T. ptilodes, lineare, & 

 delicatum, V. D. 23. 



Hab. West Indies, Venezuela, and Ecuador. Very variable in robustness and hairi- 

 ness. The large state is a very beautiful plant. 



41. T. bicorne, Hk. ; rhizome strong, scarcely creeping ; st. 1-2 in. 1., winged 

 nearly or quite down to the base ; fr. 2-3 in. 1., 1-1^ in. br., bi- or tri-pinnatifid, 

 ovate in general outline, divided down to a narrowly-winged rachis ; lower pinnce 

 ovate-triangular, cut down to a broadly -winged rachis, the lobes again deeply 

 divided ; ult. segm. linear ; substance subcoriaceous ; a central costa only in each 

 segment ; sori 2 to 4 to a pinna ; invol. tubular, quite sunk in the frond, the 

 mouth dilated into two lateral projections. Hk. Ic. PL t. 982. 



Hab. North of Brazil, Spi*uce. This and the two preceding resemble one another 

 closely in delicacy of texture, but differ in the extent to which the frond is divided. 



42. T. intramarginale, Hk. & Gr. ; rhizome slender, wide-creeping, tomentose ; 

 st. very short ; fr. 1-2 in. 1., ^-\ in. br., oblong-rhomboidal, bipinnatifid, tapering 

 gradually below, central portion 1 lin. br. ; segm. few, erecto-patent, linear, simple 

 or forked ; substance subcoriaceous, opaque, somewhat crisped when dry ; a 

 central costa only in each segment, but the margin thickened ; sori 1 to 4 to a 

 frond, terminal or axillary on the upper segments, tube sunk, mouth not dilated. 

 Hk. $ Gr. Ic. Fil. t. 211. Hk. Sp. 1. p. 120. Crepidomanes, V. D. B. 



Hab. Ceylon, rediscovered recently by Mr. Thwaites. This resembles in texture the 

 next species and No. 31. 



43. T. latemarginale, Eaton ; rhizome slender, wide-creeping, tomentose ; st. 

 none or scarcely any ; fr. about ^ in. 1., J in. br., suborbicular or oblong-rhom- 

 boidal, pinnatifid ; main rachis with a wing about 1 lin. br. ; segm. linear, close, 

 simple, or once forked ; substance membranaceous, surface naked ; a central 

 costa only in each segment, but the margin thickened ; sori 1 to 3, terminal on 

 the upper segments, tube sunk, mouth dilated, two-lipped. Eaton, Fil. Chin. & 

 Japan, p. 3. 



