88 8. HYMENOPHYLLUM. § 1. EUHYMENOPHYLLUM. 



oblong, cut down to a winged rachis. Pinnulae ± 3 on each side, the 

 lower 2 — 3-fld. Ultimate segments obtuse, 2 — 3 mm. long, '/, — 1 mm. 

 broad, entire. Texture thin, hyaline ; colour olive-green ; veins conspicuous, 

 black. Sori on the anterior side of the pinnae, often axillary, rarely 

 terminal on the higher lobes; indusium dark-olivaceous; valves distinct, 

 semiovate, subentire; receptacle stout, exserted. 

 Penang. 



(36?) H. semiflssuin, Copeh, in Philipp. Journ., X^, 145. 



Rhizome very slender, wide-creeping, minutely and sparingly pilose. 

 Stipes remote, filiform, 1 — 3 cm. long, very minutely and sparingly pilose, 

 as is the rachis. Fronds ovate, 6 — 8 cm. long, 2— 3-pinnatifld, the rachis 

 narrowly winged in the upper part. Pinnae oblong, the larger 2-pinnatifid, 

 with a few entire laciniae to 6 mm. long and '/^ mm. broad, with the 

 apex blunt or rarely emarginate. Colour fuscous ; surfaces naked ; veins 

 black. Sori terminal on the first anterior or the next following laciniae; 

 indusium divided about '/V'^^'Y down, the valves subacute, entire; 

 receptacle long, black. 



Borneo. 



(6) U. australe, waid.s H. crispum, Nees <& BL, Nova Acta, 

 XI, tab. XIV, fig. 1 A, a — e; — var. atrovirens; ? H. javaniciim, Spr., 

 var. complanata, Est., in Bull. Btz., 1911, 11, 22. 



(7) H. demissum, Sw. 



This species is construed as including 2 forms: H. demissum Stv. 

 and H. productum Kze. 



{la) H. demissum, Sw.} Schk., Krypt. Gew., I, tab. 135 c; ?H. 

 productum, Kz,, var. integriloba, Rst., in Bull. Btz., 1911, II, 22. 

 Indusium roundish or broadly ovate, entire. 

 Borneo (?); New Zealand, Polynesia. 



{lb) H. productum, JSr«e,- V. D. B., Hym. Jav., tab. XLV; 

 H. demissum, Sw., var., C. Chr., Ind. Fil. 



Indusium elongate-ovate, the outer edge denticulate. 

 Malaya. 



(10) H. pauicnlifloi'um, J»r.; H, discosum, Christ, in Bull. 

 Herb. Boiss., XI, 140, 



