53. BIPLAZIUM. § 1. EHDIPLAZinsf. "405 



lanceolate, firm, castaneous. Fronds lanceolate-oblong, 15— 25 c.M. long, G'/j— 

 7V2 c.M. broad, pinnate. Pinnae multijugate, 15— 18 m.M. broad, close, sessile, 

 obtuse, crenate, the upper base auricled; lower pinnae not much shorter, deflexed. 

 Texture firm; surfaces naked; rachis pubescent; veins obscure, erecto-patent, 

 forked. Sori linear, reaching from the costae to the margin ; indusium naked, 

 narrow, persistent. 

 Sumatra. 



* (13) D. pallidum, Moofe (not HI.), Gopel., Polypod. Philipp., 

 73; Bedd., Ferns Br.I., II, tab. CXCVI; Asplmium pallidum, BL, Rac, Flor. 

 Btz., I, 222. 



Rhizome short, creeping," clothed with black, lanceolate scales. Stipes 

 16 — 30 c.M. long, firm, erect, stramineous, naked or scaly at the dark-brown 

 base. Fronds 30 — 100 c.M. long, with numerous nearly horizontal, straight 

 or falcate pinnae on each side. Pinnae 7^15 c.M. long, short-stalked, linear- 

 lanceolate, the apex acuminate, 1 — 2 c.M. broad, the edge often sharply toothed, 

 the upper base truncate, often rounded, the lower cuneate, slightly rounded. 

 Texture coriaceous ; veins once or twice forked. Sori in regular lines, reaching 

 from the midribs to the edge or occupying the lower half of the veins. 



Malaya; Queensland. 



(14) D. vacillanis, C. Chr., Ind. Fil.; Asplenium vacUlans, Kze, 

 Bot. Zeit., i848, 172. 



Rhizome short-creeping, clothed with black scales. Stipes 40 — 45 c.M. 

 long, bluish-pruinose, the base blackish, scaly like the rhizome. Fronds oblong, 

 ± 50 c.M. long, 15 — 20 c.M. broad, acuminate. Pinnae + stalked; spreading, 

 rather distant, linear-oblong, falcate, the apex narrowed, the edge regularly 

 and broadly serrate, the upper base truncate, the lower subcuneate. Texture 

 thinly coriaceous; surfaces naked ; costae prominent; veins forked, the higher 

 simple, the lowest once or more times forked, oblique. Sori rather distant, 

 rarely diplazioid, commonly reaching from the midribs to the margin. 



Java. 



* (15) D. bantamense, JBI., Christ, Farnkr. d. Erde, 216; D. 

 fraxinifoUum, Bedd., Ferns Br.I., I, tab. LXIX ; Asplenium fraxinifolium, Wall., 

 Hk., 2"'' Cent, of Ferns, tab. XIX; A. haniamense, Bk., Rac, Flor. Btz., I, 

 221 ; — var. alternifolium ; A altemifqlium, Melt., Ann; Mus. Bot. L. B., II, 

 237; D. alterni/oUum, BL, Hk., Fil. Exot., tab. XVII. 



