420 53. DIPLAZIUM. § 1. EUOIPLAZiUM. 



Pinnulae 10 — 15 on each side, approximate, sessile, sharply acuminate, 5 — 10 c.M. 

 long, ± 1 — 2 C.M. broad at the suddenly narrowed base, the edge cut '/i — '/*■ 

 way down to the costa into oblong, entire, crenate or serrate, bluntish, approxi- 

 mate or close lobes. Texture herbaceous ; surfaces naked or nearly so ; rachis 

 green, + naked; main veins pinnate with 5 — 7 simple or forked veins on 

 each side. Sori copious, the lower commonly double, commencing at the 

 main vein (costula), generally falling short of the edge. 

 Malaya; Trop. Amlralia, North. India. 



(44) D. ebenenm, J. Sm., Copel., Polypod. Philipp., 76 ; ( ? D. as- 

 perum, BL, C. Chr., Ind. Fil.). 



Differs from D. polypodioides, BL by its slender, naked, ebeneous rachises, 

 and the ultimate lobes, with but 4 distinct veins in each. 



Philippines. 



* (45a) D. asperum, BL, Christ, Farnkr. d. Erde, 219; D. poly- 

 podioides, Bedd., Ferns S.L, tab. CLXIII; Asplenium polypodioides, Matt., Rac, 

 Flor. Btz., I, 227, p. p. ; A. asperum, Hk. (not Mett.), Hk., Spec. Fil., Ill, 258. 



Near D. polypodioides, BL, but the stipes^ main and partial rachises as- 

 perous and more or less scaly. Pinnulae and lobes ± spreading, the lobes 

 rounded or bluntish, not truncate. Texture rather coriaceous; veins 8 — 12 

 on each side, commonly simple. Sori short, commonly confined to the lower 

 half of the veins. 



Malacca, Java, Mindoro; North. India. 



(456) D. fructuosum, CopeJf., Philipp. Journ., I, Suppl., 150, tab. VIII. 



Near D. polypodioides, BL Rhizome erect. Stipes ± 1 M. long, deeply 

 sulcate, the lower part clothed with iong, linear, black-brown scales leaving 

 the stipes spinulose when they fall, the upper part glabrescent. Fronds 1'/, — 

 2 M. long, ± 1 M. broad, the rachis muricate. Pinnae + 16 cBT. broad, 

 nearly spreading, the lower ones hardly reduced, the rachis smooth. Pinnu- 

 lae subsessile, acuminate, + spreading, + 1 '/j c.M. broad near the base, the 

 edge hardly cut ^j^-waY down to the costa into entire, falcate, truncate lobes. 

 Texture herbaceous; surfaces naked; veins + 6 on each side of the main 

 veins. Sori often filling up the whole under surface. 



Mindanao. 



(46) O. prionophylluni; jr*e., Bot. Zeit., 4848, 194. 



