17. TRICIIOMANES, §§ EUTRICHOMANES. 81 



ft Main rachis hardly, if at all, winged in the lower part. Sp. 40-57. 



40. T. Filicula, Bory ; rhizome wide-creeping, tomentose, rather slender ; st. 1-2 

 in. 1., naked, slightly winged ahove ; fr. 1-4 in. 1., ] |-2 in. hr., ovate, tripinnatifid, 

 main rachis with a very narrow wing or free helow ; jAnnce ovate-rhomboidal, 

 pinnatifid down to a narrowly-winged rachis ; the lower pinnl. again deeply 

 pinnatifid ; ultimate secjm. linear ; texture firm, membranaceous ; a central costa 

 in each segment, spurious venules none or indistinct ; sori 1 to 4 to a pinna, 

 axillary or terminal on the segments ; tube sunk or somewhat exserted, the 

 mouth very distinctly two-lipped, the lips subtriangular with a rounded apex. — ■ 

 Hk. Sj/n. \. p. 124. Didymoglossum, Desv. — /3, T.late-alatum, V.D. B. ; ultimate 

 segments very narrow and acute, wing of rachis somewhat crisped, spurious 

 venules distinct. — V. D. B. Suppl. 1. p. 54. D. plicatum, V. ]Q. B. 



Hab. Mauritius, Bourbon, Madagascar, Natal, Cape Colony, and Fernando Po ; 

 Nepaul, Assam, Japan, N. Hindostan, Ceylon, Java, Borneo, and Polynesian Islands. — 

 Very like T.fyxidiferum in habit, and principally distinguishable by the distinctly two- 

 lipped involucre. It was formerly supposed that oue of them was confined to the New, 

 the other to the Old World ; but T. -pyxkliferiim has now been found abundantly in Asia, 

 Africa, and the Polynesian Islands ; and I cannot distinguish from this, though labelled 

 pyxidiferum on high authority, a Mexican plant from Liebmann. Here are included 

 numerous sfiecies of Van den Bosoh ; amongst which are his Didijmogio<su)n Draytonia- 

 num, eiiphkbium, Griffitliii, racemulosum, insigne, capillatum, and dilatatum. The 

 oldest specific name is T. bipunctatum, Poiret. 



49. T. pyxidiferum, L. ; rhizome wide-creeping, tomentose, ratlier slender ; st. 1-2 

 in. 1., naked, winged above ; fr. 1-6 in. 1., 1-1^ in. br., ovate-oblong, tripinnatifid, 

 main rachis with a very narrow wing ; jnnnce ovate-rhomboidal, pinnatifid down 

 to a narrowly-winged rachis, with the lower pimil. again deeply pinnatifid ; 

 ultimate segjii, linear, often emarginate at the apex ; texture membranaceous ; a 

 central costa in each segment ; spurious venules none or indistinct ; son 1 to 4 to 

 a pinna, axillary, tube more or less winged, mouth broadly dilated but scarcely 

 two-lipped ; recept. filiform, exserted. — Hk. Sp. 1. p. 124. Hk. £ Gr. Ic. Fil. t. 

 206.— /3, T. emarginatum, Presl ; more divided, the segments of the jnnnules 

 numerous and crowded. T. cavifolium, C. MuUer. — -y, T. olivaceum, Kunze ; 

 segments broader, less divided, wing of rachis somewhat crisped, spurious venules 

 distinct. 



Hab. Tropical America, from Mexico and the West Indies southward to Brazil and 

 Peru ; Bourbon, Cape of Good Hope, Angola, Fernando Po, Hindostan, as far north as 

 Khasia, Moulmein, Borneo, and New Caledonia. — Our a corresponds to numerous 

 species of Van den Bosch, including his hymenopfiylloides, Lechleri, BrasiUcnse, Borboni- 

 cum, Milnei, Vieillardi, eximium, and Schmidtianum. 



50. T. radicans, Swartz ; rhizome wiry, wide-creeping, tomentose ; st. strong, 

 wii-y, ascending, 2-6 in. 1., naked or nearly so, sometimes the upper part winged ; 

 fr. 4-12 in. 1., 2-6 in. br., tripinnatifid, main rachis very narrowly winged, often 

 free, except near the apex ; lower />mwcB 1-4 in. 1., ovate-rhomboidal, cut down 

 to a narrowly-winged rachis ; pinnl. again deeply pinnatifid, ovate-rhomboidal, 

 with deeply-toothed lower segm.; ?e^#?<re membranaceous but firm ; a single vein 

 only carried into each ultimate segment ; sori lateral, 1 to 4 to a pinnule, the 

 tube small, subcoriaceous, more or less decidedly exserted, the mouth very 

 slightly two-lipped ; recept. slender, elongated. — Hk, Sj/n. 1. p. 125, 7ion Hk. '(& 

 Gr. Ic. Fil. t. 218. Hk. Brit. Ferns, t. 42. T. speciosura, Wilkl.—(3, T. 

 Kunzeanum, Hk.; _/7\ 12-18 in. 1., subcoriaceous, main and secondary rachises 

 liardly at all winged ; pinnce distant stalked, pinnules deeply pinnatifid, the 

 lowest lobes again pinnatifid, the segments very long and narrow. — Hk. Si/n. 1. 

 p. 127. t. 39. D. T. Antillarum, V. D. B. T. umbrosum, Wall.—y, T. Lul-hna- 

 tianum, Presl ; /r. lanceolate acuminate, quite sessile. — Hymenophyllum rupestre. 

 Raddi. 



