218 32. HUMATA. § 1. EUHUMATA. 



naked; veins 1 to each ultimate segment, subprominent beneath, as are 

 the costae and costulae. Fertile fronds similar but the segments con- 

 tracted, the lowest pinnae pinnatifld, the ultimate lobes either much 

 abbreviated, as broad as long, with the apex dilated, obliquely truncate 

 and retuse, or somewhat elongated and obtusely repando-dentate. Sori 

 occupying the ultimate lobes or their teeth, the former often with a 

 narrow space which projects like a very short, blunt, tooth-like horn 

 beyond the sori; indusium much broader than deep. 



H. pusilla J. Sm. differs from this in having all the dimensions 

 larger, and the fronds laxly divided, 



Neto Gtmtea, 



(9&) H. siibtilisi, V.A.V.R., in Bull. Btz., 1912, VII, 18; 



H. perpusilla, v. A. v. i?., 1. c, 17. 



Rhizome slender, wide-creeping, clothed with adpressed, subulate- 

 lanceolate, peltate scales. Stipes scattered, filiform, naked. Fronds small ; 

 barren fronds cuneate-obovate, ovate or semiorbicular, deeply pinnatifid 

 or nearly pinnate, the base cuneate or truncate. Segments 2 — 4 on a 

 side below the terminal one, erecto-patent in the proportionally narrowest, 

 subflabellate in the proportionally broadest forms, the lowest segments 

 therefore varying from very oblique to horizontal; largest segments 

 sparingly pinnatifld in the smallest, 2-pinnatifid in the largest forms. Lobules 

 short-oblong, linear-oblong or cuneate-oblong, the apex acute or irregularly 

 2 — 8-dentate, the teeth shortly deltoid, acute or bluntish. Texture 

 coriaceous, more or less fragile when dry, surfaces naked; venation 

 pinnate or subflabellate; veinlets prominent, 1 to each tooth. Fertile 

 fronds with the segments much contracted, nearly petioliform. Sori 

 solitary on the dilated apices of the fertile lobules, at the base of 1 — 2 

 proportionally long, horn-shaped teeth. — H. jjerpusiUa, which is a youth 

 form of this only, has the fertile fronds with the segments hardly 

 contracted, nearly similar to those of the barren fronds. 



Forma typica: Stipes 1--2 cm. long; fronds about 1 cm. long by 

 '/, — I'/s cm. broad; divisions moderately crowded. 



Forma major: Stipes to 4 cm. long, those of the fertile fronds the 

 longest; fronds to 2% cm. long and to 2 cm. broad; divisions rather 

 laxly spreading. 



Neio Guinea, Amhoina, Taliabo. 



