17. TRICHOMANES, EUTRICHOMANCS. J 79 



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

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

 dilated ; recept. long, filiform. V. D. B. Suppl 2. p. 119. T. fimbriatum, Backh. 

 Gard. Chron. 1862, p. 44. 



Hab. 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., l|-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. I*, -5- in. br. ; main rachis 

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

 forked ; spurious veuules 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, Hk. & Gr. Ic. Fil. t. 10 (non Swarta}. 



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



40. T. alatum, Swartz ; st. tufted, 2-4 in. 1., winged above ; fr. 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 ; sori 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. 1. p. 123. Hk. fy Gr. Ic. 

 Fil. t. 21. T. attenuatuin, Hk. Sp. 1. p. 122. t. 39. C. T. ptilodes, lineare, & 

 delicatum, V. D. B. 



Hab. West Indies, Columbia, Brazil. 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 f 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 ; %dt. 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. PI. t. 982. 



Hab. North of Brazil, Spruce. 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. 



