44. ONYCHIUM. 351 



brown. Fronds IB— 60 c.M. long, 7-20 c.M. broad, otate or lanceolate-del- 

 toid, 3-pinnate to 4-pinnatifid. Lower pinnae subdeltoid, erecto-patent. Pinnu- 

 lae and segments numerous; ultimate divisions dimorphous, the sterile ones 

 often obovate-cuneate, 3-fid at the apex, not more than S— 10 m.M. long and 

 Vj — 1 m.M. broad, the fertile ones poJ-like, '/s — ^^k c-M. long, 1—2 m.M. 

 broad. Texture coriaceous; rachis and both surfaces naked. Indusium mem- 

 branaceous and like the sofi long, linear or linear-oblong, of a rich golden- 

 yellow colour. 

 Trop. Asia. 



* (5) O. japoilicum, MCise., Rac, Flor. Btz., I, 164; 0. lucidum, 

 Spr., Bedd., Ferns Br.I., T, tab. XXI; Cryptogramme japonica, Prantl, Diels, in 

 Engl. & Prantl, Nat. Pfl.Fam., I*, 279 ; Trichomanes j'aponicum, Thb., (oldest name). 



Rhizome creeping, clothed with narrow, lanceolate scales. Stipes stout, 

 erect, naked, glossy, 10 — 30 c.M. long, stramineous or pale-brown. Fronds 

 ovate-lanceolate, 20 — 58 c.M. long, 7 — 20 c.M. broad, 3-pinnate or 4-pinnatifid. 

 Lower pinnae lanceolate-deltoid, erecto-patent. Pinnulae and segments numerous, 

 the ultimate divisions uniform or nearly so, 3-lobate, copious, the lobes mu- 

 cronate, 4 — 10 m.M. long, 1 — 272 mM. broad. Texture herbaceous to sub- 

 coriaceous; rachis and both surfaces naked. Sori short, oblong; indusium 

 pale or brown, membranaceous; capsules brown or pale-brown. 



Java, Timor, Philippines; Japan, China, North. India. 



4S«. FTEJRIS, Zinn^. 



Sori linear, submarginal, on a receptacle uniting the vein tips, occupying 

 both (posterior and anterior) sides of the ultimate segments, generally inter- 

 rupted at the tops of the sinuses between the ultimate lobes. Indusium of 

 the same shape, consisting of the reflexed, modified margin of the frond. 

 Spores globose to tetrahedral. 



Rhizome creeping or erect, scaly. Stipes not articulate to the rhizome, 

 traversed by a single, mostly \/- or U-shaped vascular strand. Fronds 

 commonly variously divided, sometimes variegatef, i. e. the upper surface 

 provided with broad, whitish or pale-coloured bands running down the costae ; 

 veins free or anastomosing. Hk. Bk., Syn. Fil., tab. Ill, fig. 31, a^-c; Diels, 

 in Engl, k Prantl, Nat. Pfl.Fam. P, fig. 194. 



