126 



14. 13E1VIVST.A.KI3TIA, JBemhafdi. 



(2a) D. canaliculala, ». A. ». n., in Bull. Btz., 1914, XVI, 6. 



Fronds ± 150 cm. long by 90 cm. broad, 3-pinnatifid, the rachises 

 pale-brown, naked beneath, grooved above, copiously hirsute in the 

 grooves, the hairs pale-brown or rufous, often fibril-like. Pinnae 

 lanceolate, subsessile, articulate at the base, the lower opposite, the 

 largest + 45 cm. long, to 15 cm. broad. Pinnulae horizontal, sessile, 

 lanceolate, acuminate, broadly cuneate and articulate at the base, the 

 edge cut + '/4-way down to the costa; largest pinnulae + l''^ cm. 

 broad; lowest pinnulae much abbreviated, the lowest anterior nearly 

 stipule-like. Lobes ascending, oblong, broadly rounded or rotundate- 

 truncate at the apex, to 4 mm. broad, separated by narrow, often acute 

 sinuses, subentire or sparingly crenated. Texture coriaceous; surfaces 

 naked; costae 2-marginate-canaliculate above; costulae flexuose, often 

 thickened at the base; veins simple or forked. Sori solitary on the 

 anterior side of the lobes, near the base; indusium cup-shaped. 



Java. 



(3) O. erythrorachis, Bieis. 



Probably identical with D. ampla Bedd. 



(4) D. ampla, Bedd. 



Plants gathered in Neto Guinea by Versteeg and von Romer, 

 determined by Christ and Rosenstock as D. ampla Bedd., have the rachises 

 partly purple-brown partly pale-brown, partly deciduously pubescent 

 partly naked but shortly pubescent in the groove and at the place of 

 insertion of the pinnae and pinnulae, the pinnae and pinnulae articulate 

 at the base, the lower pinnulae reduced, the leaflets lobed, connected by 

 ad very narrow wing, the largest leaflets ± 1 cm. long and '/j as broad. 

 They differ from D. articulata Copel. in 'having the pinnae long-acuminate, 

 broadly cuneate at the base, and the ultimate leaflets much smaller. 



(4a) D. ar<iciilata. Copel., in Leafl., II, 396. 



Rhizome creeping, stout, black-brown. Stipes distant, 1 — I'/j m. 

 long, sparingly black-aculeate towards the base, distinctly canaliculate 

 above; rachises castaneous, very glossy, sulcate, pubescent in the 

 grooves, provided with bunches of hairs at the points of insertion 



