162 22. DRYOPTERIS. § 1. LASTEEA. 



(36) W. crythrosora. O. Ktxe.; Nephrodium erythrosorum.^ Hk., 

 Spec. Fil., IV, 120, tab. CCLIII. 



The specimens of this species, which I liave seen in Japan, were 

 distinguished by the following characters. 



Rhizome short, scaly. Stipes tufted, 15 — 35 cm. long, more or less 

 densely scaly with long, lanceolate and linear-subulate scales especially 

 in the lower half, the scales more or less deciduous in age. Fronds 

 30 — 60 cm. long, 20 — 30 cm. broad, ovate-lanceolate, acuminate. Pinnae 

 lanceolate, more or less truncate at the base, acuminate, rather bluntish 

 at the point, the lowest often a little smaller than the next higher ones, 

 broadest on the lower side, sometimes deflexed, the largest more or less 

 spreading, to 15 cm. long, 5 — 7 cm. broad, cut down quite to the rachis 

 into oblong, sessile or adnate, more or less obhque, blunt or bluntish 

 pinnulae. Pinnulae 5 — 12 mm. broad, with the edges slightly, spinulosely 

 or more or less coarsely toothed; lowest pinnulae the broadest, rather 

 spreading, truncate at the base and not rarely subpetiolulate ; the largest 

 teeth often lobe-like, more or less close, blunt and often slightly or 

 spinulosely toothed again. Texture firm-herbaceous, rather subcoriaceous ; 

 surfaces naked, or the under surface slightly provided with a few 

 inconspicaous, pale hairs on the veins; rachises slightly scaly or more or 

 less furfuraceous with small, crisped scales. Sori in rows of 4 — 9 on a 

 pinnula, often slightly immersed, nearer the midrib than the margin; 

 indusium bright-red when young, with a distinct, pale or decoloured 

 margin. — The young fronds have the stipe and rachis densely scaly 

 with bright-brown or dark-brown scales. 



(36a) D. metlia, r. A. «. n., in Bull. Btz., 191S, XI, 9. 



Stipes + 80 cm. long, finely deciduously pubescent, scaly towards 

 the base ; scales brown, linear-subulate, entire, the base persistent, 

 verruciform. Fronds lanceolate, + 70 cm. long and 20 — 25 cm. broad, 

 acuminate. Pinnae numerous, close, spreading, short-stalked, lanceolate, 

 the central ones ± 10- 12'/2 cm. long, + 3 cm. broad at or near the 

 base, cut down nearly to the costa, acuminate, the lower a little shorter. 

 Lobes numerous, approximate, spreading, linear, blunt, the largest to 4; 

 2 cm. long, ± 4 mm. broad, bluntly toothed (hardly lobed), the lowest 

 somewhat smaller, more or less deflexed or decurved, often more deeply 

 incised, rather pinnatifid at the base. Texture herbaceous; rachis finely 

 pubescent; surfaces naked; costae, costulae hairy above, finely pubescent 



