CQ 



S3. BIPLAZIUM. § 1. EUDIPLAZIWM. 403 



Rhizome erect or decumbent, slightly clothed at the apex with lanceolate 

 scales. Stipes 10 — 30 e.M. long, firm, erect, nakedi yellowish to brownish, 

 i-h" scaly ^t the base. Fronds ± 20—60 c.M. long, ± 10—30 cM. broad, ovate- 



fl to triangular-lanceolate, with many or numerous spreading, pinnae. Largest 



I pinnae 5 — 18 c.M. long, 1— S'/j c.M. broad, acuminate, or the upper ones 



"^ blunt or bluntisbi the edges crenate and broadly, mostly obliquely lobed 



w (commonly to 2 '/j m.M. deep), the base rounded, broadly cuneate or truncate, 



S whether or not auricled on the upper side; lower pinnae stalked, upper 



sessile; apex of the frond deeply pinnatifid. Texture thin, herbaceous; veins 

 pinnate in the lobes. | Sori long, linear. 

 Panlropical. 



(8) D. acrotis, Chri»t, Bull. Herb. Boiss., 2« S6rie, VI, 1000. 

 Rhizome oblique, short. Stipes tufted, numerous, 3 — 4 c.M. long, slender, 



pale-castaneous like the rachis, crinite with subulate, black-brown scales. 

 Fronds caespitose, 12 — 14 c.M. long, + 3 c.M. broad, pinnate, the rachis 

 slender, nearly filiform, not winged, sparingly furfuraceous. Pinnae ±14 

 on each side below the pinnatifid, acuminate apex, ± horizontal, stalked, 

 regular, oblong, ± 1% c.M. long, ± 8 m.M. broad, subfalcate, the base 

 cuneate on the lower, truncate and prominently and acutely auricled on the 

 upper side, the edge coarsely toothed with 5 — 6 teeth on each side, the apex 

 bluntish or acute; lower pinnae becoming shorter, higher sessile. Texture 

 herbaceous; veins 1 to each tooth, simple, the lowest anterior one pinnate 

 in the auricle. Sori oblong, oblique, regular, reaching the midrib and the 

 edge^ often double. 

 Luzon. 



(9) O. blseriale, C. Chr., Ind. Pil. ; Asplenium biseriale, Bk., Trans, 

 Linn. Soc, Bot., 2»'' Series, IV, 252. 



Rhizome short-creeping. Stipes erect, 3'/j — 5 c.M. long, clothed above 

 with lanceolate, spreading, brown scales. Fronds oblong-lanceolate, simply 

 pinnate, naked, 10—15 c.M. long, 3 '/a — B c.M. broad; rachis covered with 

 small scales. Pinnae multijugate, sessile, lanceolate, the higher ones entire, 

 the lower ± 5 m.M. broad, deeply crenate, with the lower base reduced; 

 veins obscure, erecto-patent. Sori in 1 row on each side of the costae, 

 linear-oblong, often diplazioid; indusium broad, membranaceous, naked, per- 

 sistent. ^ 



Borneo. t 



