654. FILICES. 



cale: veins lined by larger-areolate tissue, forked or lowest dichotomous, uppermost 

 7-1 0(-5) fertile, most of the latter simple : no streaks; indusium sunk: limb laterally 2- 

 armed.—Kze. Farnkr. t. 68.— Leaf 10"-12" high, 2" broad : rhachis 1'" broad at the base; 

 column 3-4 times as long as the indusium. — Hab. Trinidad !, Cr., heights of Las Cuevas ; 

 [Mexico and Guiana to Peru]. 



29. T. crispum, L. Leaves approximate, pinnatipartite to the base, not decurrent, 

 hairy or glabrescent : segments approximate, horizontal, oblong, cordate at the adnale base, 

 Hunt, undulate-repand : sinus truncate : veins forked, lowest usually dichotomous, uppermost 

 7-5 fertile, simple ; no streaks ; indusium sunk : limb spreading, repand. — Plum. Fil. t. 86. 

 Leaf 8"-15" high, 2" broad, often incurved : rhachis \ w broad at the very narrowly mar- 

 gined base ; column very long-exserted in the West Indian specimeus, but I regard my con- 

 tinental form with the column twice only or thrice as long as the indusium as j3. brevistylum 

 (syn. T. cristatum, Kze. in Kappl. PL Surin. 600, non Kaulf. ; T. crispum, J. Sm. in Seem. 

 Pi. Panam.) : T. Martiusii, Pr. ! in PI. Kegel. 1054, is intermediate between both.— 

 Hab. Jamaica !, Pd., on decayed trees ; Montserrat ! [Cuba to French islands !, P, Mexico ! 

 to Brazil !]. 



30. T. Kaulfussii, Hook. Grev. Leaves approximate, pinnatipartite, narrowly de- 

 current into the petiole, hairy : segments approximate, horizontal, oblong, bluntish, 

 serrate : veins dichotomously divided or forked : no streaks ; indusium sunk, margined at 

 its spreading, truncate Yimh.—Hook. Grev. Lc. t. 10.— Leaf 8"-2" high, 14" broad : serra- 

 tures usually denticulate again, spreading : rhachis 2'" broad. — Hab. Jamaica ! ; S. Kitts, 

 Dominica !, Imr., S. Vincent !, Guild. ; Trinidad ; [Portorico to French islands ; Guiana !, 

 equat. Brazil!]. 



§ 4. Indusia at the uppermost veinlets or at the veinlets of both margins of the leaf- 

 divisions : limb repand-entire or laterally 2-horned ; veinlets cr its branches in the 

 ultimate leaf- divisions simple. — Leaves conform. 



31. T. lucens, Sw. Leaves csepitose, pinnatisect, pilose, rusty-villous at the petiole 

 and rhachis: segments spreading, approximate, pinnatifid, crispate, adnate at the base, fer- 

 tile along the margin of most lobes, most subequal : lobes ovate, blunt, inferior crenate ; 

 veinlets pinnatelv divided: no streaks; indusium sunk: limb laterally 2-horned or sub- 

 entire.— Hedw. Fit. t. 5.— Leaf 6"-2' high, 1" broad.— Hab. Jamaica !, Bancr., Wils., on 

 shady soil. 



32. T. crinitum, Sw. Leaves csespitose, pinnatipartite, pinnatisect at the base, hairy : 

 segments pinnatificL spreading, most subequal : lobes linear, blunt, uppermost fertile : 

 veinlets simple or forked .- no streaks : indusium wholly sunk : limb spreading, subentire, 

 ciliate.— Hedw. Fil. 1. 1.— Leaf 3"-5" long, 6"'-12'" broad ; column long-exserted, thickish 

 at the summit : but the division of its apex (figured by Hedwig), upon which Presl ha- 

 zarded a generic separation, does not exist in our specimens. — Hab. Jamaica !, March, on 

 trees fn the mountains ; S. Vincent !, Guild. 



33. T. alatum, Sw. I Leaves caespitose, pinnatipartite, narrowly loug-decurrent into 

 the slender petiole, tapering toward the summit, hairy : segments pinnatifid (or serrate), 

 usually acuminate, spreading, fertile at the inferior lobes : superior veinlets simple, inferior 

 piunately divided : no streaks ; indusium wholly sunk, or margined at its spreading trun- 

 cate, or laterally 2-horned limb. — Variable, but the specimens in* Swartz's herbarium (one 

 labelled in his own handwriting) belong to a, not seen in other collections. 



a. Rhachis 1'" broad : rib narrower than the wings ; column 3-4 times as long as 

 the truncate indusium— Plum. Fil. t. 50. D. Hook. Gen. t. 31.— 6"-10" high, I 

 broad. 



£. attenuatum, Hook. ! Rhachis 1'" broad : rib narrower than the wings ; column twice 

 as long as the laterally 2-horned indusium.— Hook. Spec. t. 39. C— 3"-8" high, 1 '-»* 

 broad. 



y. ptilodes, V. d. Bosch ! Rhachis £"' broad •. rib as broad as the narrow wings ; co- 

 lumn 3-5 times aa long as the truncate, or slightly 2-horued indusium. — Hook. Grev. -""• 

 *• 11.— T. alatum, Hook. Grev.—%"-\2" high, 3"-4" broad; inferior leaf-segments often 

 2-pinuatifid at. the base. 



