﻿53. DIPLAZIUM. § 1. EUDIPLAZIUM. 409 



naked. Pinnae lanceolate, acuminate, 7 — 13 c.M. long, 2 '/a — 3 c.M. broad, 



paucijugate, cut down V2'W^y ^^ ^^® costa, the lower base cuneate; higher 



pinnae sessile, lower short-stalked, not reduced. Lobes oblong, 5 — 6'/j m.M. 

 broad, entire. Main veins pinnate; veins 4 — 6-jugate, erecto-patent, simple. 



Sori not reaching the apices of the veins; indusium narrow, naked, per- 

 sistent. 



Sumatra. 



(25a) D. IWilliamsi, Copet., Philipp. Journ., I, Suppl., 150, 

 tab. VII. 



Rhizome erect, short, the scales subulate, blackish-fuscous. Stipes 4 — 10 

 c.M. long, erect, the base black, scaly, the upper part green, naked. Fronds 

 10 — 20 c.M. long, lanceolate, acuminate, pinnate, the rachis slender, green, 

 naked. Pinnae in ± 10 pairs below the pinnatifid apex, alternate, serrate or 

 slightly lobed, obtuse or acute, the upper base truncate-auriculate, the lower 

 cuneate; lowest pinnae distant, short-stalked, + 2 c.M. long, deltoid-lan- 

 ceolate, deeply pinnatifid into oblong, obtuse, denticulate lobes. Texture pa- 

 pyraceous; surfaces naked; veins subconspicuous, 2 — 4-furcate. Sori elongate, 

 often double. — Fruiting fronds are found less than 5 c.M. long including 

 the stipe, with the lowest pinnae less incised. In size and shape this species 

 resembles D. grammitoides, Pr. 



Mindanao. 



(256) ». acuminatum, ni., Christ, Ann. Btz., XII, 220; D. 

 Chrislii, C. Chr., Ind. Fil. ; Aspleniitm acuminatum, Wall., List, No. 205. 



Stipes naked, yellowish, + 55 c.M. long. Fronds oblong-deltoid, + 55 

 c.M. long, ± 25 — 30 c.M. broad. Pinnae ± 20 on each side, the lowest 

 largest, + 2 c.M. broad, distinctly stalked, the base slightly rounded, the 

 edge cut + V2'Way down to the costa, the apex long, toothed. Segments 

 close, broadly ligulate, blunt, truncate, + 5 m.M. broad, entire or slightly 

 denticulate. Texture herbaceous; surfaces naked. Sori + 5 on each side of 

 the costulae, not reaching the latter, linear; indusium very narrow, incon- 

 spicuous. 



Malaya. 



(26) D. petiolare, JPr., Copel., Polypod. Philipp., 74. 

 Stipes brown, smooth. Fronds about 50 c.M. long, pinnate, with a pin- 

 natifid apex. Pinnae + 12 c.M. long, the lowest a little shorter, but longer 



