8. HYMENOPHTLLDM. § 1. EUHYMENOPHYLLUM. 71 



± 3 c.M. long, I'/j — 2 cM. broad, cut down to a winged rachis into 4 — 7 

 segments on each side, the base narrowed and decurrent. Segments ovate, 

 obtuse, deeply incised. Lobes linear, obtuse, entire, 2 — 4 on each side, + 

 1 m.M. broad. Texture firm; colour dark-brown; both surfaces nearly naked. 

 Sori solitary on the superior primary segments, exserted, often short-stalked; 

 indusium campanulate, deeply 2-vaked; -valves triangular, entire, a<!ute, at 

 length reflexed; receptacle 3 m.M. long, broad, exserted. 

 Celebes. 



(12) H. thnidiuni, Hat-r., Journ. of Linn. Soc, Bot., XVI, 25. 



Stipes slender, VI^—1% c.M. long, winged. Fronds 5— 12*/2 c.M. long, 

 a'/a— S c.M. broad, ovate to oblong, 3 — 4-pinnate, erect; rachis and branches 

 winged like the stipe. Pinnae to ± 2'/j c.M. long, deltoid; wings and 

 ultimate divisions finely crisped throughout. Surfaces naked. Sori few to 

 many in the upper part of the frond, on the ends of the ultimate divisions, 

 large; indusium divided nearly to the base; valves large, ovate, crisped. 



Philippines. 



* (13) H. salakense, Jt«c., Flor. Btz., I, 18. | See Supplement 1. , 



Rhizome wide-creeping, slender, sparingly pilose. Stipes distant, 4—8 

 c.M. long, winged throughout or nearly so. Fronds lanceolate or djovate, 

 g — 15 c.M. long, 3 — 10 c.M. broad, sometimes subdeltoid; main rachis broadly 

 winged. Pinnae erecto-patent, cut down to a broadly winged rachis into 

 simple, forked or 2 X forked pinnulae. Ultimate segments 3— 1 5 m.M. long, 

 2 — 3 m.M. broad, linear or oblong, bluntly rounded or emarginate at the apex. 

 Surfaces naked ; a single central rib in each segment. Sori terminal on the 

 segments; indusiura deeply 2-valved; valves roundish or transversely oblong, 

 entire, broader than the segments, to o'/a m.M. broad; receptacle malleiform. 



Java. • ' - -- — f 



* (14) H. Blumeanum, Spr., Rac, Flor. Btz., I, 16; V. D. B., 

 Hymen. Jav., tab, XXXVI; Bedd., Perns S.I., tab. CCLXVI; H. pycnocarpum 

 ^ integrum, V. D. B., 1. c, tab. XXXVII— XXXVIII; H. polyanthos, Sw., Hk. 

 Bk., Syn Fil., 60, p. p. 



Rhizome filiform, creeping. Stipes slender, 1 -4 c.M. long, not rarely mar- 

 ginate, not winged, or winged in the upper half only. Fronds efcovate to lanceolate 

 or even linear, 5—15 c.M. long, + 1—7 c.M. broad; main rachis narrowly J 

 winged. Central pinnae the longest, oblong or lanceolate, deltoid or rhom- 



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