22. DEYOPTERIS. § 2. NEPHEOMUM. 181 



fronds smaller, 35 — 80 cm. long, 12 — 30 cm. broad, with the pinnae 

 1 ' , — 2 cm. broad, the edges broadly crenate, the base cuneate-truncate, 

 slightly auricled on the upper side, the veins + 4 — 7 .on a side, the 

 4 — 6 lower veins anastomosing; sori medial but the lower not rarely 

 confluent, elongated and produced along the intermedial vein, the 

 indusium deciduous. — The form with confluent lower sori at length 

 hardly distinguishable from Phegopteris § Meniscium when the indusia 

 are fallen away. 



Also in Sumatra and Java, New Giiinea. 



94) O, ferox, O. state} — var. calvescens; D. penangiana, C. 

 Chr., var. calvescens, Copel., in Phillipp. Journ., V^, 288. 



Under surface naked, or more or less copiously pilose on the costae, 

 costulae and veins. 



War. caK'escens. — Also in Borneo, Negros. 



(96a) O. hamifera, r. JL. ». K., in Bull. Btz., 1914, XVI, 12. 



Rhizome ascending, forming a short trunk. Stipes + 45 cm. long, 

 densely short-hairy and 3-sulcate, as is the rachis, provided with many 

 remote, opposite, reduced, auricle-like pinnae nearly to the base, the hairs 

 pale. Fronds elongate-lanceolate, + 70 cm. long excluding the reduced 

 pinnae, + 20 cm. broad near the base, narrowed gradually towards the 

 acuminate apex. Pinnae horizontal, numerous, sessile, provided with a 

 long-elevate, hamate gland at the base beneath, the largest linear, + 

 1 — I'/a cm. broad, cut -,.,-way down to the costa below the crenated 

 acuminated apes, truncate at the base, the lower nearly suddenly reduced. 

 Lobes nearly horizontal, sub falcate-oblong, blunt or bluntish, crenated, ± 

 2', mm. broad, somewhat remote. Texture coriaceous; costae and 

 costulae rather long-hairy, the hairs pale; veins sparingly long-hairy 

 above ; upper surface short-hairy on and between the veins, naked beneath ; 

 veins + 7 — 8 on a side, simple, the lowest anastomosing. Sori medial 

 on the veins; indusium persistent, coriaceous, short-hairy. 



SumcUra. 



(97) O. |»iloso-sc|iiainata, ». A. r. R.; — var. obtusata, v. A. 

 •V. R., in Bull. Btz., 1914, XVI, 12. 



Barren fronds larger than the fertile ones, to + 65 cm. long and 40 

 cm. broad, with the pinnae broader, to 8'/.^ cm. broad, suddenly long- 



