60b. DICTYOPrEEIS. § 1. ARCYPTERIS. 323 



Rhizome woody, creeping, more or less intricate, giabrescent, the 

 apex provided with pale-brown, subentire, lanceolate scales. Stipes 

 approximate or remote, + 4 — 8 cm. long below the wing-like decurrent 

 portion of the frond, sparingly pale-brown-scaly towards the base. Fronds 

 spathulate, 4; 40 — 50 cm. long, 6—10 cm. broad, the upper part lanceol- 

 ate-oblong to lanceolate-ovate, acuminate, entire or slightly irregularly 

 wavy, narrowed rather suddenly into the narrowly linear-cuneate lower 

 part; barren fronds with the upper part about twice to thrice as long as 

 the lower part; fertile fronds just the contrary, in all corresponding parts 

 narrower than the barren ones, and on the longest stipes. Texture thin- 

 coriaceous; surfaces naked; costa and main veins prominent, the latter 

 not reaching the margin, straight, or somewhat curved, much spreading 

 but not horizontal, the lower growing gradually irregular and disappearing 

 in the wing. Sori compital, or medial to terminal on free veinlets, 

 varying from roudish to short-linear, straight or somewhat curved, those 

 near the costa and main veins often parallel or suljparallel to these. 



Sumatra. 



(12) tt. lamaoeusis (lamoensisj, v. A v. «.,• Aspidium lamaoense^ 

 Cupel.; A. irriguum, J. Sm.^ C. Chr., Ind. Fil., Suppl., p. p. 



(15) D. pentapliylla, ». A. v. n.s Aspidium quinquefoliolatum, 

 C. Chr., Ind. Fil., Suppl. 



(16) D. IWhilfordi, ». A. v. R.; Aspidium irregulars, G. Chr., 

 var., C. Chr., Ind. Fil., Suppl. 



§ 2. DIGRAMMARIA. 



(20) D. isubaequalis, ». a. v. R.; Aspidium subaequale, Est., 

 in Fed., Rep., XII, 176; Tectaria subaequalis, Copel, in Philipp. Journ., 

 IXC, 5. 



Stipes to 20 cm. or more long, minutely tomentose. Fronds ovate, 2- 

 pinnatifid, acute, broadest below the middle. Pinnae 5 — 7 on a side 

 below the deeply lobed apex, subopposite, suberecto-patent, sessile, adnate ; 

 largest pinnae elongate-oblong, + 13 cm. long by 3 cm. broad, cut more 

 than '/I'Way down to the costa, narrowly adnate at the base, somewhat 



