112 HYMENOPHYLLUM. 



Nep. p. 12. — Mountains of Nepal, Hamilton. — "Fronds 1 — 

 \\ foot high ovato-lanceolate." 



79. H. tenellum, Don ; " frond pinnate, pinnae alternate 

 pinnalifid, segments linear-oblong obtuse entire emarginate 

 at the base sinii)le or bifid, sori solitary lateral, involucres en- 

 tire, stipes and rachis winged." Don. Prodr. Fl. Nep. p. 12. 

 — Nepal, HamiHon, Wallich. — "Fronds very thin, 1 — 2 

 inches high ; habit of H. Tunhrichjense, but most distinct in 

 the entire, not serrated, segments, in their emarginate apices, 

 entire involucres, in the stipes being winged and in the sori 

 being placed at the apices of the lateral segments." 



80. H. endivicefolium, Desv. ; " fronds decurrently tri- 

 pinnate, piuna3 subdistant, pinnules confluently pinnate, 

 segments linear emarginate obtuse undulate crisped, stipes 

 rounded margined at the apex." Dew. in Mem. Sac. Linn. 

 ii. /?. 334. — Fenx {Desvaux). " Fronds 4 — 10 inches." The 

 author says nothing about the margins of the segments, whe- 

 ther serrate or entire, nor are the involucres noticed. 



81. H. decurrcns, Sw.; "fronds bipinnate, pinnules oblong- 

 ovate cuneate pinnatifido-lobate, the segments linear obtuse, 

 sori terminal." Sw. Syn. Fil. p. 166. Willd. Sp. PL v. p. 

 530. — Adiantum decurrens, Jacq. Collect, ii. p. 103, t. 2, /. 12. 

 Martinique, (./ac*//^/;?). — This plant is taken up solely on 

 the authority of Jacquiu, whose figure is extremely unsa- 

 tisfactory. A specimen in the Banksian herbarium under 

 this name is H. 2^rotrusum of the present work. 



82. H. emarginatum, Sw.; "fronds dichotomously subtri- 

 pinnatifid oblong, pinna? decurrent, pinnules bipartite, the 

 segments linear emarginate, terminal ones elongated, sori su- 

 praaxillary." Sw. Syn. Fil. p. 148 and 377. Willd. Sp. PL v. 

 p. 530. — Mountains of Java, Thunherg. — "Stipes 2 — 3 inches 

 long. Fronds half a span. Sori terminal on short segments 

 towards the apex of the frond, globose. Columella (recepta- 

 cle) included; valves of the involucres subrotund, rather 

 large, erect, connivent. Among the largest of the species, re- 

 markable for its elongated terminal segments." 



Dubious Species. Section quite unknown. 



83. H. hygrometricum,'Desv.; "fronds subbipinnated, jnn- 

 nae alternate ])innatifid, pinnules incised obtuse, caudex 

 creeping tomentose." Trichomanes nudum, Poir. in Encycl. 

 Bot. viii. p. 79. — Madagascar, TJtouars. 



84. H. nudum, Desv. ; fronds lanceolate erect bipinnate, 

 pinna? alternate pinnatifid, segments linear obtuse ciliato- 



