﻿230 22. DRYOPTERIS. § 2. NEPHRODIUM 



rows between the main veins, generally near the base of the veins ; indusium 

 very fugacious or undeveloped, only to be detected on very young fronds. 

 Penang; North India, China. 



(117) D. ooi§Oi*a, C Chr., Ind. Fil.; Nephrodium oosorum, Bk, 

 Kew Bull., d896, 41. 



Rhizome unknown. Stipes ± 30 c.M. long, grey, slightly pubescent. 

 Fronds oblong-lanceolate, 45 — 60 c.M. long, 15 — 20 c.M. broad, 2-pinnatifid. 

 Pinnae multijugate, 1% — 2 c.M. broad, pinnatilid ^j^-^^^Y down to the costa, 

 the lower ones not reduced. Lobes ovate-lanceolate, crenulate, slightly falcate. 

 Texture subcoriaceous ; rachis pubescent.; both surfaces naked; veins simple, 

 erecto-patent, conspicuous, 10 — 12-jugate. Sori oblong, medial; indusium 

 membranaceous, pubescent, persistent. 



Borneo. 



* (118) S>. Rieclleana, «. a. «. Mt.f Nephrodium Biedlianum, 

 Moore, Ind., 102; Polyslichum Riedleanum, Gaud., Freyc, Voy. Ur. Phys. Bot., 

 327 ; C. Chr., Ind. Fil. ; Aspidium Riedleanum, Gaud., Freyc, 1. c, 326. 



Rhizome unknown. Stipe and rachis dark-red, nearly black, (brown when 

 dry ?), pubescent. Fronds pinnate. Pinnae lanceolate, pinnatilid, subacuminate, 

 the base truncato-cuneate, lower pinnae gradually reduced, distant. Lobes 

 ovate, obtuse, subfalcate, the lowest subauriculiform. Surfaces hairy. — Dif- 

 ferent from D. parasitica, 0. Ktze by the rather gradually reduced lower 

 pinnae. 



Timor. • 



(119) S>. ftroducta, C. Chr., Ind. Fil.; Nephrodium produclum, Klf., 

 Mett., Farng., IV, Phegop. & Aspid., 109. 



Rhizome unknown. Stipes hirsute. Fronds 30 — 60 c.M. long, oblong, 

 acuminate, the base suddenly narrowed. Pinnae sessile, 7 — 15 c.M. long, 

 1 — 2 c.M. broad, linear-lanceolate, acuminate with a long, entire point, the 

 edge pinnatilid, the base truncate, lowest pinnae suddenly reduced, distant, 

 + 1 7i ^-M- long, semiorbicular, obtuse, 3-fld. Texture rigid ; rachis canali- 

 culate and pubescent on the upper side; surfaces covered with inconspicuous 

 hairs on the costae and veins; veins 6 — 7 on each side, the 2—3 lowest 

 anastomosing, all soriferous. Sori medial on the veins; indusium persistent. 



Luzon. 



