280 54. ATHYBIUM, 



scales; pinnulae acutely dentate-serrate, with the midrihs not spinulose 

 ahove. — Otherwise like A. nigripes Moore hut shorter. 



(18) A. sti'aniineutti, Copel, in Philipp. Journ. IIP, 292. 

 Stipes + 30 cm. long, naked except at the base which in provided 



with a few brown scales, very succulent, green, as is the rachis. Fronds 

 + 50 cm. long, + 20 cm. broad. Pinnae + 8 on each side, petiolate, 

 pinnate, the largest ± 15 cm. long, ± 5 cm. broad, acuminate, the 

 lowest somewhat shorter, suberect. Pinnulae suboblique, + 2 '4 cm. 

 long, + 1 V4 cm. broad, obtuse, cut down nearly to the costa, the medial 

 ones narrowly adnate; segments oblong, denticulate. Texture thinly 

 membranaceous; upper surface nearly black, lower deep-green. Sori 

 linear-oblong, up to 3 cm. long, narrow, costal, remote ; indusium narrow, 

 pale-green, often asplenioid; sporangia pale-brown. 

 Negros. 



(19) A., coistulisortini, Copel., in Leafl., Ill, 815; Diplasium 

 GOStuUsormn, G. Chr., Ind. Fil., Suppl. 



Stipes close, up to L m. or more long, green, brown-spotted below, 

 naked, black at the base, white-margined, the margin intumescent. Fronds 

 1 m. or more long, 3-pinnate. Pinnae opposite, horizontally spreading, 

 the largest 50 cm. or more long, sessile, acuminate, the rachis soon giab- 

 rescent. Pinnulae to + 11 cm. long, subsessile, acuminate, the rachis grooved 

 above, pubescent beneath with persistent, crinite, dirty-rufous hairs. 

 Tertiary segments + 20 on a side, to 13 mm. long, to 4 mm. broad, 

 obtuse, serrate or inciso-serrate, the lowest hardly adnate. Surfaces 

 naked; veins + 7 — 10 on a side, forked, pubescent beneath. Sori short; 

 indusium rudimentary, soon fugacious, 



Mindanao. 



(20) A. inaeroj^oruin, Copel., in Leafl., Ill, 815. 



Stipes close, 60—150 cm. long, green, black towards the base. Fronds 

 subdeltoid, + 60—150 cm. long, B-pinnatifid. Pinnae long-stalked, to 

 50 cm. long. Pinnulae short-stalked, to 15 cm. long, ± 2'/2 cm. broad, 

 acuminate, lobed to pinnatifld, the apex acuminate, coarsely toothed, the 

 base cuneate-truncate ; lobes close, obhque, rotundate-truncate, denticulate 

 or serrate at the apex. Texture herbaceous; surfaces naked; under 

 surface somewhat paler than the upper, very sparingly flbrillose on the 



