32l 

 006. OICTYOI»TERIS, J»re*l. 



§ 1. ARCYPTERiS. 



(I) D. plei'oides, Pr.; Asimlium irregulare, C. Ghr., var., C. 

 Chr., Ind. Fil, Suppl. 



(Ifl) D. Dahlii, v. A. v. n., in Bull. Btz., 1912, XII, 11 ; Phegop- 

 teris Dahlii, Hier., in Notizbl. Bot. G-art. Berl., II, 84; Aspidium Dahlii, 

 Diels, in Schum. & Laut., Flor. deut. Sch.geb., 116; C. Chr., Ind. Fil. 



Stipes 50 cm. more or less long, glossy, stout, canaliculate, blackish- 

 brown and scaly towards the base. Fronds elongate-ovate, 2-pinnatifid, 

 to + 40 cm. long or longer, the rachis brownish or reddish-brown, naked 

 or puberulous. Pinnae linear-oblong, + 4 — 12 cm. long, + 1 — 2 cm. 

 broad, acute or acuminate, cut to ^!2-^Sij down or more to the costa 

 into numerous obtuse, more or less crenated lobes. Testure moderately 

 thin ; surfaces naked, ot- the costae more or less puberulous ; venation 

 more or less as in Pleocnemia. Sori roundish, confined to the margin of 

 the lobes. ■ — Copland King's No. 312 is perhaps another species or a 

 more decompound form of this; the specimen is a fragment (pinna) of a 

 3-pinnatifid frond mistaken for a whole frond. 



New Guinea (?); Neio Lauenhurg. 



[\b) D. hemUeliiformis, ». A. ». K., in Bull. Btz., 1913, XI, 

 7 ; Pleocnemia, leuzeana, Pr., var. hemiteliiformis, Rao., Flor. Btz., I, 194 ; 

 Aspidium hemiteliiforme, v. A. t\ B., MS. in Herb. Bog. 



Fronds 100 cm. more or less long, 2 — 3-pinnate, the rachises densely 

 fibrilloso-villose above, less so beneath, the hairs reddish-brown. Pinnae 

 pinnate, 50 cm. more or less long. Pinnulae remote, of the lowest pinnae 

 + 6 — 10 cm. long, 8 — 15 mm. broad, cut + \-'w&j down to the costa, 

 or the lower posterior ones elongated and similar to the higher pinnae. 

 Lobes oblong, blunt, separated by rounded sinuses provided with a small 

 tooth, the edges entire or nearly so, more or less flbrilloso-ciliate. Texture 

 more or less firm; surfaces naked; venation as in Pleocnemia, forming 

 1 — 2 rows of areolae on each side of the costae and costulae. Sori in 

 rows nearer the margin than the costulae, parallel to the former, often 

 confined to the lobes only. 



Java. 

 Ferns and Febn Allies. 21 



