17. TEICI-IOMANES, §§ EUTRICHOMANES. 81 



tt Main racMs hardlt/, if at all, mnged in the lower part, Sp. 48-57. 



48(«5ifaS&"eM&, Bory ; rhiaome wide-creeping, tomentose, rather slender ; St. 1-2 

 in. 1., naked, slightly winged above ; fr. 1-4 in. 1., I5-2 in. br., ovate, tripinnatifid, 

 main rachis with a very narrow wing or free below ; pinnm ovate-rhomboidal, 

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

 pinnatifid ; ultimate segm, 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 ; tiAe sunk or somewhat exserted, the 

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

 Hk. Syn. 1. p. 124. Didymoglossum, Desv. — ji, T. late-alatum, V.D. B. ; ultimate 

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

 venules distinct. — V.D.B.Suppl. \.p. 64. P; iitfiiTMil '^™? ^' ^ ,\ M ; 



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

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

 Very like T. pys^iferum in habit, and principally distinguishable by the distinctly two- 

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

 the other to the Old World ; but T. pyxidiferu'm 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 species of Van den Bosch ; amongst which are his Didymogiiossum Draytonia- 

 num, euphlebivm, Griffithii, racemuhsum, insigne, capillatwm, and dilatatum. The 

 oldest specific name is T. Upunctatum, Poiret. 



49. X.4gtta^jfcg'», L. ; rhizome wide-creeping, tomentose, rather slender ; St. 1 -2 

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

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

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

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

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

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

 two-lipped ; recept. filiform, exserted.— 2f/&. Sp. 1. p. 124. Hk. & Gr. Ic. Fil. t. 

 206.— ft T. emMrginatum,, Presl ; more divided, the segments of the pinnules 

 numerous and crowded. T. camfolium, C. MuUer. — 7, T. olivaceum, Kunze ; 

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

 distinct. 



Hab. Tropical America, from Mexico and the Wesl 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 hymenophylloides, LecMeri, £rasiUense, Borboni- 

 cum, Milnei, Vieillardi, eximium, and Schmidtimmm. 



50. T. ro^caafc Swartz ; rhizome wiry, wide-creeping, tomentose ; St. strong, 

 wir^'!S8SfflBgr^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 ; Xowei pinnai 1-4 in. 1., ovate-rhomboidal, cut down 

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

 with deeply-toothed lower segm. ; texture 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. Syn. 1. p. 126, non Hk. S 

 Gr. Ic. Fil. t. 218. Hk. Brit. Ferns, t. 42. T. speciosum, WiUd.—j3,_T. 

 Kunzeanim, Hk.;^. 12-18 in. 1., subcoriaceous, main and secondary rachises 

 hardly at all winged ; pinnm distant stalked, pinnules deeply pinnatifid, the 

 lowest lobes again pinnatifid, the segments very long and narrow.— i?,?;. Syn. 1. 

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

 tianum, Presl ; /n lanceolate acuminate, quite sessile.— Hymenophy Hum rupestre. 

 Raddi, 



