53. DIPLAZIUM. § 1. EUDIPLAZIUM. 273 



(45«*) i>. snhpolypodioiileis, v. A. v. n., in Bull. Btz., 1915, 

 XX, 11; D. aspentm, Bl, var. subpolypodioides, v. A. v. R., i9i4, XVI, 8. 



Rachises sparingly asperulous by the hardly elevated persistent bases 

 of scattered, weak and fragile, curved or subflexuose, subsetiform (hardly 

 spiniform) fibrils; pinnulae of lower pinnae to + S% cm. broad, deeply 

 pinnatifid ; lobes to + 7 mm. broad at the base and the broadly rounded 

 or obliquely truncate-rotundate apex, somewhat refuse near the base; 

 edges subentire in the smaller lobes, crenate in the larger ones; veins 

 + 5 — 7 on a side, simple in the smaller lobes, once to twice forked in 

 the larger ones. 



Sumatra. 



(456) IB. ffriBctiBwssini, Copel; D. affine, J. Sm., in Journ. of Bot., 

 Ill, 407; Atlujrium frmtuosum, Copel., in Philipp. Journ., IIP, 294; 

 Leaf!., II, 401. 



Caudex up to 45 cm. high, to 15 cm. thick. Stipes to 2 m. long, 

 3 — 4 cm. thick at the base and densely covered with soft, dull-brown 

 trichomes above, green and smooth on the upper side, covered beneath 

 with yehowish-brown, powdery scales which are easily rubbed off, and 

 provided with blunt, rigid spines. 



(48a) ». assiuiile, Bedd., Ferns Br. I., II, tab. CCXCIV; B. 

 umbrosum, Bedd., var. assimile, Bedd., Handb. Ind. Ferns, 190; 

 Athyrium assimile, Pr., Tent. Pterid., 98; C. Chr., Ind. Fil. ; Asplenium 

 umbrosum, J. Sm., var. assimile, Hk. Bk., Syn. Fil., 489; Aspl. assimile, 

 Bndl. (oldest name). 



Stipes 45 — 60 cm. long. Fronds deltoid, 3-pinnate, Pinnae alternate, 

 lower nearly opposite, up to 30 — 35 cm. long by + 15 cm. broad. 

 Pinnulae 5 — 9 cm. long by 1 '/^ — 3^/^ cm. broad, gradually acuminated. 

 Tertiary segments a little more than 1'/^ cm. long by 6 mm. broad, 

 lower subsessile, upper decurrent, almost a parallelogram in shape with 

 a broad rounded apex, divided y, or '^l^ of the way to the costa into 

 + 5 lobes on each side. Lobes slightly falcate, entire or generally with 

 1 toothlet on the upper margin and rarely on the lower. Texture 

 membranaceous, flaccid ; surfaces naked ; ■ veins forked or pinnate. Sori 

 elongated, often double. 



Polynesia to Neio Guinea, Ceylon. 



Ferns and Feen Allies. 18 



