22. DRYOPTERIS. 2. NEPHEODIUM. 185 



the costae, the under surface deciduously and minutely puberulous, the 

 veins to 10 on a side, the 1 — 3 lower veins anastomosing, the sori 

 not minute. 



(Ulc) O. batacorum, Rst., in Fed., Rep., XIII, 217; — var. 

 Winkleri, Rst„ 1. c, 218. 



Rhizome erect. Stipes tufted, 5 — 10 cm. long, sparingly hairy above, 

 clothed with lanceolate, ferrugineous, flaccid scales. Fronds + 40—55 

 cm. long, pinnate, the upper part ovate, + 7 cm. broad, acuminate. 

 Pinnae ± 20 — 30 or more on each side below the pinnatifid apex, 

 approximate, the 10 — 20 lower suddenly reduced to mere auricles to 8 

 mm. long; largest pinnae sessile, subhorizontal, linear, to 3'/., cm. long 

 by 1 cm. broad (or a little broader) towards the apex, obtuse or subacute, 

 lobed, truncate at the base. Lobes somewhat oblique, ± 2 mm. long 

 by 2'/2 mm. broad, truncate. Texture papyraceo-herbaceous ; surfaces 

 slightly verruculose; under surface provided with minute yellow glands; 

 rachis grooved above, short-hairy in the groove, the hairs, whitish, 

 intermixed with longer ones, for the rest provided with short, adpressed 

 hairs and linear-lanceolate, deciduous scales; costae hirsute above, short- 

 hairy beneath, as are the costulae, provided with a black-brown, conical 

 gland on the lower side at the base; veins simple, 3 — i on a side, the 

 lowest only anastomosing. Sori nearer the costulae than the margin; 

 indusium firm, black-brown, naked, persistent. 



War, IWinkleri: Like the type, but the pinnae more remote, 

 without basal glands, the under surface not glandular, short-hairy, the 2 

 lowest veins anastomosing. 



Sumatra. 



(112) D. truiicata, o.stme. 



Under surface smooth, verruculose or finely glandular. 



i,112(X) D. Orooksii, Copel., in Philipp. Journ., III*^, 345. 

 Rhizome probably creeping, clothed with black scales. Stipes + 40 

 cm. long, green, sulcate, naked, the base scaly like the rhizome. Fronds 

 + 80 cm. long, + 15 cm. broad. Pinnae + 30 pair, subremote, the 

 largest ones ± 10 cm, long, ± 1 cm. broad, sessile, falcate, truncate 

 ■and auricled at the base, shallowly lobed, acuminate, the lowest ones 

 reduced, minute, 6 cm. apart. Lobes 1 — 2 mm. deep, 3 — 4 mm. broad, 



