656 FILICES. 



simple, or, if emarginate, forked veinlet, the lower inferior secondary ones fertile between 

 the 2 lowest segments of the inner margin ; inditsium margined, much shorter than 'the 

 column : limb short, repand, or slightly 3-horned. — Eedie. Fil. t. 6. — T. scandens, Sedw. 

 {non Hook). T. ambiguum, Sieh. T. hrevisetum, U. Br. {'f. europavm, Sm.) : a short- 

 lobed form with the column less developed, from which, following Y. d. Bosch, I exclude T. 

 speciosum, W. (Canary Islands !), for its longer, not margined petiole. — Leaf 6"-14' high, 

 2"-6" broad : petiole l"-3"(-6'') long.— Hab. Jamaica !, Wils., Pd., on trees ; [Cuba ! 

 to French islands ! ; Mexico ! to Brazil 1 ; Pacific islands !, East Indies ! ; T. irevisetam : 

 Azoric islands !, Madeira, and Ireland]. 



41. T. rigidum, Sw. Leaves ceespitose, 3-pinnatipartite, decurrent by a very narrow 

 line, glabrescent (or hairy at the rhachis) : tertiary segments linear, acuminate, with a 

 simple veinlet, the lowest of the nipfer side fertile near the hose of the inner margin : no 

 streaks ; indusium exserted, subsiipitate : limb short, crenulate-repand. — Bedw. Fit. t. 2. 

 — Leaf 6"-li' high, 2"-3'' broad. — Hab. Jamaica I, Pd., on tree-roots ; Dominica !, Imr., 

 Barbadoes I, Parker : [all tropical countries]. 



42. T. Prieurei, .^ze. Leaves csespitose, 3-pinnatipariite, decurrent by a very narrow 

 line, glabrescent ; tertiary segments inferior pinnatifid-2-Jid, swperior and quarternary ones 

 linear, hluntish, snberect, with a simple veinlet, the lowest cf the upper side fertile near 

 the base of the inner margin : no streaks ; indusium exserted, subsiipitate .- limb short, 

 subentire.— .ffoo/E. Spec. t. 40. C.—T. anceps, ffoolt.—Lea.f iy-2'(-6") high, 5"-8"(-3'9 

 broad. — Hab. Dominica I, Imr. ; Trinidad I, Pd., in woods ; [French islands I to Peru ! and 

 Brazil!]. 



*** ZeafZ-pinnaiisect: petiole and rhachis not margined. 



43. T. scandens, i., Sio., Hook, (non Kse.). Leaves scattered, %-pinnaiisect, hairy : 

 segments spreading, distant, secondary ones pinnatipartite, acuminate, tertiary pinnatifid, 

 or few-serrate, bluntish : lower lobes of the wpper side fertile on the inner margin : vein- 

 lets often forked : no streaks ; indusium sunk : limb short, truncate. — SI. t. 58. Pr. 

 Bpimel. t. 6. Kze. Parnkr. t. 130. — T. Sloanei, Eze. T. macroclados, Kse. T. Lindeni, 

 Pr. Linnseus's anthority for T. scandens (exclus, syn. Plmn.) is clear from his words : 

 " urceoli supra axillas." — Ebizoma " scandent ;" leaf 8"-2' high, 3"-6" broad. — Hab. Ja- 

 maica (SI., Pr.), in the Blue Mountains ; [Cuba !, Haiti]. 



44. T. trichoideum, Sw. Leaves delicate, scattered, or approximate, %-pinnatisect, 

 glabrous: segments divaricate-spreading, secondary ones pinnatipartite, tertiary distant, 

 narrowly cuneaie-linear, emarginate, or bifid, fertile on special pedicels above the base of 



1 the inner margin : veinlets simple in the ultimate lobes : no streaks-; indusium free : limb 

 short, truncate.— Ssrfw. Fit. t. 3./. 1. Schk. Crypt. t.lSi. Hook. Grev. Ic. 1. 199. Pr. 

 Fpimel. t. 8. A. — T. capillaceum, L. (Plum. Fil. t. 99. D. : Davallia, W.) : excluded by 

 Swartz, who however took the badly-figured segments for terminal sori. T. tenellum, Heda. 

 T. cuneiforme, Schk. T. angustissimum, Pr. — Leaf 2"-10" high, cut into hair-shaped seg- 

 ments. — Hab. Jamaica I, Wils., Pd., on fern-stems, in moist woods, at 5000' alt. ; [Mexico I 

 to Brazil!]. 



§ 6. Indusium-limb spreading, dorsally 2-lipped. — Low ferns ; leaves conform, scattered 

 along the creeping rhizome, pinnatifid-entire {Didymoglossa, Desv.). 



- 45. T. Kraussii, Hook. Grev. Leaf deeply pinnatifid, or ^-pinnatifid, shortly pe- 

 tioled, or subsessile, bearing cilia chiefly in the sinus of the lobes : lobes spreading, oblong- 

 linear, blunt, sinuate-repand : veins pinnately divided with alternate branches: veinlets 

 distant: streaks few, short ; indusium sunk into the lobes : limb 2-lipped to the base : co- 

 lumn twice as long as the indusium, — Hook. Grev. Ic. 1. 149. — T. reptans, Kze. (ex parte). 

 T. pinnatifidnm, V. d. Bosch .'.- the 2-pinnatifid form.— -Leaf l"-2i" long, almost pinnati- 

 partite. — Hab. Jamaica !, Pd., Wits., on trees ; Dominica, S. Vincent ; Trinidad !, Or. 

 (T. pinnatifidum, V. d. Bosch) ; [Cuba I to French islands ! ; Guiana ! to Peru !] . 



46. T. pusilliun, 8w. Leaf irregularly ^nnatilobed, or la^raifire, ouneate-oblong, or 

 heteromorphous, petioled (or subsessile), ciliate with stellate hairs, densely striated between 

 the distant, alternate, mjBjofe veins, the latter connected by ajuxtamarginal streak; indusium 

 margined, or sunk below the summit : limb free, Z-lipped to the base : column exserted. — 



