92 8. HYMENOPHYLLUM. § 1. EUHYMENOPHYLLUM. 



Ultimate segments ± l'/4 — 2 mm. broad, blunt, emarginate at the apex. 

 Texture thin; surfaces naked; a single central vein in each ultimate 

 segment, not reaching the apex. Sori terminal on the ultimate segments 

 which are narrowed a little below the sorus; indusium 2-valved; valves 

 round or suboblong, to 2 mm. broad when ripe, entire or nearly so; 

 receptacle short, included. 

 Celebes. 



(19) H. Zollinger!, Jr«e. 



Forma minor, Rst., in Bull. Btz., 1911^ II, 22: Fronds smaller, not 

 elongated at the apex. — Borneo. 



(20ffl) H. laminatum, Copel., in Philipp. Journ,, VF, 70. 



Rhizome creeping, clothed with purpureous pubescence. Stipes + 

 4 — 5 cm. long, upwards pubescent. Fronds lanceolate, + 15 cm. long, 

 2% — S'/j cm. broad, the rachis narrowly 2— 4-winged. Pinnae lanceolate, 

 acute, the lower short-stalked, cut down nearly to the costa; segments 

 oblanceolate or obovate, shghtly incised and serrulated at the apex. 

 Texture thinly coriaceous; colour rufous; central ribs broadly crested, 

 the crests undulated. Sori placed near the rachis; indusium crested at 

 the base, the mouth 2-fld, the valves denticulated. 



New Guinea. 



(21ffl) See No 2Sb. 



(23a.) H. Iiatuense, Mist., in Bull. Btz., 1911, II, 22. 



Rhizome slender, hairy, creeping. Stipes + 1 — i '/^ cm. long, slender, 

 terete, brown-hairy, very narrowly winged towards the frond. Fronds 

 linear or lanceolate-oblong, ohve-green, + 6 cm. long and 2 cm. broad, 

 the main rachis very narrowly winged towards the base, more broadly 

 so towards the apex. Pinnae suberect, linear-oblong, subcontiguous, 

 pinnatifid, the higher simple or forked, the largest nearly 2 cm. long, 

 ± 7 mm. broad. Segments linear, subparallel, to 5 mm. long, ± 1 mm. 

 broad, entire, retuse at the apex, simple, or the lower forked. Rachis 

 and costae fusco-pilose beneath; veins evanishing towards the apex. Sori 

 terminal on the lower segments; indusium elongate-oblong, conical, and 

 naked or rarely appendiculate or indistinctly crested at the base, narrowly 

 marginate in the lower half, 2-valved about '/j'^^^y down, the valves 



