78 17. TRICHOMANES, EUTRICHOMANES. 



Hab. West Indian islands and Mexico southward to Brazil and Peru ; j3, Andes of 

 Ecuador, Spruce, No. 5354. Very near the preceding, but the undivided portion of the 

 frond is broader, and the central costa more clearly marked. 



33. T. Kirleii, Hk. MSS. ; st. slender, 1 in. 1., winged above ; fr. 1-2 in. 1., 

 1 in. br., subquadrate or rhomboidal in general outline, cut down to a narrowly- 

 winged rachis ; segm. 1-2 in. 1., erecto-patent, linear, crenulate at the margin, 

 with a considerable space between them ; a central costa and numerous short 

 oblique veins and manifest spurious venules in each segment ; son 2 to 12, the 

 tube sunk in the frond, the mouth spreading, slightly two-lipped. 



Hab. Johanna Island, West Africa, Dr. Kirk, Sir F. Grey. Allied to the two preceding, 

 rom which it differs by its long narrow little-divided pinnse and winged involucre. 



34. T. simtosum, Rich. ; rhizome wide-creeping, sinuous, rather strong ; st. 

 varying from hardly any to 2 in. 1. ; fr. 2-9 in. 1., 1-1^ in. br., linear-lanceolate, 

 very gradually decurrent below, pinnatifid down to a broadly-winged rachis ; 

 colour bright green, texture delicately membranaceous ; lobes oblong, obtuse, 

 crenate at the margin ; a central costa in each, with 2 to 4 pairs of erecto-patent 

 branches ; spurious venules none, the margin ciliated ; sori 2 to 4 to each lobe, 

 the tube sunk, the mouth dilated, slightly two-lipped ; recept. much exserted. 

 Hk. Sp. 1. p. 120. Hk. & Gr. Ic. Fil. 1. 13. T. incisum, Kaulf. Hk. Sp. 1. p. 121. 



Hab. Tropical America, from Mexico and Cuba southward to Peru and Brazil. 



35. T. pinnatifidum, V. D. B. ; st. slender, 1-2 in. 1., winged above ; fr. 2-4 

 in. 1., 1-1^ in. br., ovate-lanceolate in general outline, cut down to within a short 

 distance of the rachis ; seam, linear, erecto-patent, the lower 1 in. 1., with deep 

 rounded lobes ; substance thin ; central veins of the segments with 2 to 6 pairs 

 of lateral veins ; spurious venules none, the margin ciliated ; sori 1 to 3, placed 

 principally near the base of the segments on the upper side, the tube quite sunk, 

 the mouth broadly dilated, two-lipped. V. D. B. Suppl. 2. p. 118. 



Hab. Jamaica. Closely allied to T. sinuosum, but different in outline, and much more 

 deeply divided. 



36. T. Bancroftii, Hk. & Gr. ; st. 1-2 in. 1., broadly winged down to the very 

 base ; fr. 3-6 in. 1., 1 in. br., ovate-oblong, pinnatifid down to a broadly-winged 

 rachis, texture subcoriaceous ; segm. oblong, blunt, crenate, either imbricated 

 or with a small space between them ; lat. veins of the segments branched ; 

 spurious venules none ; sori 2 to 6 to a pinna, the tube sunk, the mouth rather 

 dilated, but entire ; recept. long, filiform. #. /Sp. 1. p. 123. Hk. & Gr. Ic. Fil. 

 t. 204. Hk. Gard. Ferns, t. 56. T. coriaceum & holopterum, Kunze. 



Hab. Tropical America, from the West Indian islands southward to Brazil and Peru.] 



37. T. macilentum., V. D. B. ; rhizome creeping, wiry ; st. 2-6 in. 1., wiry, 

 winged above ; fr. 2-6 in. 1., 1-2 in. br., lanceolate or ovate-lanceolate, divided 

 down within a short distance of the rachis ; segm. oblong or linear-oblong, nearly 

 entire or divided more than halfway down into narrow linear lobes, texture 

 subcoriaceous ; veins thick ; spurious venules none ; sori 2 to 6 to a segment, the 

 tube sunk, the mouth slightly two-lipped ; recept. long, filiform. V. D. B. 1st 

 Suppl. p. 12. 



Hab. Trinidad, Demerara, and northern provinces of Brazil. Near T. Bancroftii, but 

 distinguishable by its more divided fronds and creeping rhizome. 



38. T. superbum, V. D. B. ; rhizome strong, wide-creeping ; st. 2-5 in. 1., strong, 

 winged nearly down to the base ; fr. 4-9 in. 1., 2-4 in. br., broadly ovate, pin- 

 natifid down to a narrowly-winged rachis, the substance subcoriaceous ; lower 

 pinnce lanceolate, divided more than halfway down to the rachis, with oblong 



