654 riLICES. 



eale : veins lined ■ by larger-arealate tissue, forked or lowest dichotomous, uppermost 

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

 nrmed.—Kze. Farnlcr. t. 68.— Leaf 10"-12" high, 3" broad : rhachis 1'" broad at the base ; 

 column 3-1 times as long as the iudusium. — Hab. Trinidad !, Cr., heights of Las Caevas ; 

 {Mexico and Guiana to Pern] . 



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

 hairy or glabresceut ; segments approximate, horizontal, oblong, cordate at the adnate base, 

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

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

 Leaf 8"-15" high; 2" broad, often incurved : rhachis ^"' broad at the very narrowly mar- 

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

 tinental form with the column twice only or thrice as long as the iudusium as /8- brevistylum:- 

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

 PI. Panam.) : T. MaHiusii, Pr. ! iu PI. Kegel. 1054, is intermediate betjveen both. — 

 Hab. Jamaica !, Prf., on decayed trees ; Montserrat! [Cuba to French islands !, ;3, Mexical 

 to Brazil !]. 



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

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

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

 its spreading, truncate limb. — Sook. Grev. Ic. t. 10. — Leaf 8"-2" high, 1^" broad ; serra- 

 tures usually denticulate again, spreading : rhachis 2'" broad. — Hab. Jamaica 1 ; S. Kitts, 

 Dominica !, Imr., S. Vincent 1, 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 i-homed ; veinlets or its branches i/n the 

 ultimate leaf-divisions simple. — Leaves conform. 



31 . T. luc«us, Sw. Leaves caepitose, pimnatisect, pilose, rusty-villous at the petiole 

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

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

 veinlets pinnately divided: no streaks; indusium, sunk: limb laterally 2-homed or sub- 

 eniiK.—Hedw. Fil. t. 5. — Leaf 6"-2' high, 1" broad. — Hab. Jamaica I, .Baacr., Wils., on 

 shady soil. 



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

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

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

 xA&&U.—Sedw. 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 in the mountains ; S. Vincent !, Guild. 



33. T. alatum, Sw. / Lea/ves csespitose, pinnatipartite, narrowly loug-deoorrent into 

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

 usually acuminate, spreading, /e;-fe7e at the inferior lobes: superior veinlets simple, inferior 

 pinnately 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 

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



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

 the truncate indusium. — Plum. Fil. t. 60. D. Hook. Gen. t. 31. — 6"-10" high, 2" 

 broad. 



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

 as long as the laterally 2-horned iudusium. — Hook. Spec. t. 39. C. — 3"-8" high, l"-2i" 

 broad. 



y. ptilodes, V. d. Bosch I Rhachis i'" broad : rib as broad as the narrow wings ; co- 

 lumn 3-5 times as Jong as the truncate, or slightly 2-horned indusium. — Hook. Grev. Ic. 

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

 2-pinnatifid at the base. 



