172 22. DKYOPTERIS. § 1. LASTREA 



scales lanceolate or ovate-lanceolate, pale-ferrugineous, fibrilloso-acuminate ; 

 leaflets dimorphous; fertile leaflets much contracted, to 1 cm. long, 1 

 mm. broad, remote, the lowest of the largest leaflets pinnatifld; sori 

 subcostular. -- Neiv Guinea. 



(62a) See No. 53. 



(626) See No. 58. 



(62c) See No. 59. 



(62ri) D. t.abacicoina, r. A. v. jr., in Bull. Btz., 19U, XVI, 11. 



Stipes + 80 cm. long, deciduously flbrilloso-furfuraceous and scaly, 

 glabrescent, as are the rachises, the scales dark-brown, the lower long, 

 very narrowly linear-subulate, slightly crispato-undulate, resembling fine 

 tobacco, the following passing gradually into those of the rachises which 

 are finer, hair-like, caducous. Fronds 4-pinnatifid at the base. Lowest 

 pinnae triangular-oblong, + 45 cm. long, + 30 cm. broad at the base, 

 acuminate, on stalks + 5 cm. long. Pinnulae similar in shape, the 

 lowest + 12 — 18 cm. long, those of the posterior side the longest, on stalks 

 + 1 — 1 '/j cm. long. Tertiary segments elongate-triangular, the largest 

 3 —6 cm. long, 1 '/i — 3 cm. broad at the base, on stalks + 1 — 3 mm. 

 long, the apex acute, toothed, the base truncate, deeply pinnatifld; 

 ultimate lobes spreading, linear-oblong, to 1 ' '.^ cm. long and 5 mm. broad, 

 decurrent, blunt, entire to coarsely crenated. Texture coriaceous ; surfaces 

 naked; costae and costulae more or less canaliculate above, beneath 

 deciduously crispato-pilose ; veins + 5 — 6 on a side in the largest lobes, 

 mostly forked. Sori rather medial; indusium firm, deciduous. 



Sumatra. 



(62e) D. rhodolepis, C. Chr., Ind., Fil. ; D. subarborea, C. Chr., 

 var. glabrior, v. A. v. R., in Bull. Btz., 1914, XVI, 57; Aspidium 

 intermediiim, Christ (not Bl), Farnkr. d. Erde, 263 ; Lastrea Blumei., Moore, 

 Bedd., Ferns S. I., tab. CCIL; Nephrodium Blumei, Hk., Spec. Fil., IV, 

 135, p. p.; N. intermedium, Bk., Ek. Bk., Syn. Fil., 283; N. rhodolepis, 

 Clarke, Trans. Linn. Soc, Bot., 2nd Series, I, tab. LXXII. 



Stipes + 30—60 cm. long, deciduously shaggy with long, linear or 

 subulate, brownish or brown-grey scales, as are te rachises, clothed 



