170 22. DRTOPTERIS. § 1. LASTREA. 



(59&) See No. 42.. 



(59c) O. fsubsparsa, ». A. ». n., in Bull. Btz., 1915, XX, 14. 



■ Rhizome short. tStipes aggregate, 30 — 35 cm. long, dirty-yellow-brown 

 when dry, copiously pubescent, as are the rachises, sparingly scaly 

 towards the base, the hairs short, articulated, dirty-rufous, those of the 

 stipe more or less deciduous, of the rachises persistent, the scales ovate- 

 lanceolate, fuscous, flmbriate-ciliate. Fronds lanceolate or broadly ovate, 

 20 — 80 cm. or more long, 10—30 cm. broad, acuminate, 3-pinnate at the 

 base. Terminal pinna lobed or lobate-dentate towards the apex, gradually 

 deeply pinnatifld towards the base, with the segments similar or nearly 

 similar to the higher pinnae; lateral pinnae ascending; higher pinnae 

 linear-oblong, about 5 mm. broad, lobed or lobate-dentate, toothed at the 

 apes, decurrent, connected with the terminal one; lowest pinnae largest, 

 triangular, 12'/,— 25 cm. long, T'/j — 20 cm broad, petiolate, the apex 

 similar to the apex of the frond, the base 2-pinnate. Pinnulae ascending, 

 7'-^14 on a side, the lowest posterior of the lowest pinnae the largest, 

 p'etiolulate, with the apex similar to the apex of the frond, the base 

 pinnate, and the segments oblique, decurrent, the higher confluent, the 

 lower the largest, subpetiolulate, connected by a very narrow wing, to 

 2'/, cm. long and 5 mm. broad, bluntish, coarsely toothed towards the 

 apex, lobed towards the obliquely cuneate base which is broadest on the 

 upper side. Ultimate segments (lobules or teeth) entire or sparingly 

 crenate to dentate, bluntish. Texture rather coriaceous; surfaces naked; 

 costae and costulae pubescent above ; costae, costulae and veins sparingly 

 fibrilloso-pilose beneath; veins very oblique, the higher simple, the central 

 forked, the lower sparingly pinnate in the lobules. Sori remote, medial 

 on the veins or at the base of anterior veinlets; indusium evanishing. 

 ■-'Java. 



(59d) D. 1:1^80^10^1. V. A. V. JR. 



Stipes 30 cm. more or less long, red-brown when dry, naked in the 

 lower part, above slightly tomentose in the upper part. Fronds 

 subdeltoid, about 25 — 30 cm. each way, acuminate, 3-pinnate at the base, 

 the rachises and costae dark-rufo-tomentose above with short, crowded, 

 articulated hairs. Terminal pinna serrate towards the apex, deeply 

 pinnatifld towards the base with the segments subsimilar to the higher 

 pinnae; lateral pinnae ascending; higher pinnae linear-lanceolate, lobed 



