53. DIPLAZIUM. § 1. EimiPLAZIUM. 409 



naked. Pinnae lanceolate, acuminate, 7 — 15 c.M. long, S'/j — 3 c.M. broad, 



paucijugate, cut down \-yr&Y to the costa, the lower base cuneate; higher 



pinnae sessile, lower short-stalked, not reduced. Lobes oblong, 5 — 6'/i 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. l¥illiaiiisi, Copei., 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 plnnatifid 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) D. acnminatum, m., Christ, Ann. Btz., XII, 220; D. 

 Chrislii, C. Chr., Ind. Fil.; Asplenium acuminatum, Wall., List, No. 206. 



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

 c.M. long, ± 25 — 50 c.M. broad. Pinnae + 20 on each side, the lowest 

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

 edge cut ± Vi'^^Y down to the costa, the apex long, toothed. Segments 

 close, broadly ligulate, blunt, truncate, ± 5 m.M. broad, entire or sKghtly 

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

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

 spicuous. 



Malaya. 



(36) B. petiolarc, l»i - . , Copol., Polypod. Philipp . , 74 .. 



Stipe s brown, s mooth . — Fronde about 60 o.M. long, pinnato, with a pin 



natifid ap a x . — Pinnao J. 13 c . M i long, tho l o wo et a l it t le s boptw ; 



See Supplement 1. 



