﻿8. HYMENOPHTLLUM. ^ 1. EUHYMENOPHYLLUM. 73 



forked or branched ultimate segments 2 — 10 m.M. long, ± 1 — IV2 na.M. 

 broad. Sori terminal on short lobes, 2 — 12 to a pinna; receptacle globoso- 

 capitate; indusium deeply 2-valved, the valves orbicular or oblong-obovate, 

 entire or slightly emarginate at the apex. 



Malaya ; Polynesia, Trop. Australia, New Zealand. 



* (18) H. Junghuhnii, r. n. B., Rac, Flor. Btz., I, 18; V.D.B., 



Hymen. Jav., tab. XLIX; H. dilalatum, BL, Enum., 221. 



Rhizome wide-creeping, sparingly hairy. Stipes S — 12 c.M. long, furnished 

 at the base with few, short, brown, spreading, deciduous hairs, narrowly and 

 shortly winged above. Fronds 3 — 4-pinnatifid, linear-obovate, 13 — 25 c.M. 

 long, sometimes shorter, 4 — 10 c.M. broad; rachises more or less broadly 

 winged. Pinnae erecto-patent, to + 10 c.M. long and to ± 2 c.M. broad. Pinnulae 

 erecto-patent, to + l^j c.M. long, to ± 5 m.M. broad, cut down into 1 — 3 

 simple or bifid, erecto-patent ultimate segments 3 — 12 m.M. long, 1^2 — ^ 

 m.M. broad. Sori terminal on lateral segments; indusium roundish, transver- 

 sely oblong or reniform, 1 '/^ — 2 '/j m.M. long, 2 — 5 m.M. broad, the outer edge 

 rounded, entire; receptacle malleiform. 



Sumatra, Java to Polynesia. 



* (19) H. ZoUingerianum, Jr«c, Hk. Bk., Syn. Fil, 62; V. D. B., 

 Hym. Jav., tab. L.; (H. fuscum, V. D. B., Rac, Flor. Btz., I, 19, p. p.). 



Rhizome creeping, ± hairy. Stipes 5 — 10 c.M. long, deciduously hairy. 

 Fronds lanceolate and 10 — 20 c.M. long or linear and 20 — 40 c.M. long, acuminate. 

 Pinnae rather distant, 1 — 2'/2 c.M. long, 7 — 15 m.M. broad, the lower ones 

 triangular or oblong, acute or rounded at the apex, divided more than Va""^"^! 

 down into oblong, erecto-patent, deeply pinnatifid segments. Ultimate lobes 

 linear-oblong, + 1 m.M. broad. Rachis narrowly winged, often slightly hairy ; 

 a single central vein in each ultimate segment; veins ± hairy and slightly 

 crested like the rachises. Sori 2 — 8 to a pinna, large, terminal on lateral 

 segments; indusium obovate, divided ± Va'^ay down, the mouth rounded, 

 entire; receptacle mostly short. — An abnormal form has the upper pinnae 

 much elongated. 



Java. 



* (20) H. fuscum, T. n. H., Rac, Flor. Btz., I, 19, p. p.; V. D. B., 



Hymen. Jav., 62, tab. LI— LII. 



Rhizome filiform, creeping, hairy. Stipes 3 — 7 c.M. long, hairy. 



