134 16. ARTHROPTEEIS. 



the rachis puberulous with very short, grey hairs. Pinnae horizontal, 

 sessile, subacute, auriculated on the upper side at the base, blackish 

 when dry. Indusium more or less persistent. 

 Neio Guinea. 



(5) A. oblanceolata, ». JL. v. R., in Bull. Btz., 1915, XX, 6. 



Rhizome scandent, wiry, sparingly scaly. Stipes scattered, very 

 short, sparingly scaly. Barren fronds oblanceolate-oblong, + 12',. 2 — 15 

 cm. long, + 2V2 — i cm. broad at or above the middle, pinnate, the 

 sides subparallel in the broadest portion, the apes short-acuminate. Pin- 

 nae + 15 — 20 on a side; terminal pinna rather small, rhomboidal, 

 subacute, the base cuneate or decurrent, often obliquely hastate-auriculate ; 

 lateral pinnae rhomboidal-oblong, horizontal or nearly so, the largest + 

 2 cm. long by + T'/j mm. broad, the apes broadly rounded, the edges 

 entire or subentire, subparallel, sparingly and deciduously ciliolate, the 

 upper base cuneate-truncate, subparallel to the rachis, bluntly auriculate, 

 the lower base more narrowly cuneate; lower pinnae growing gradually 

 shorter, deflesed. Testure papyraceous; surfaces naked; rachis sulcate 

 above, deciduously pubescent beneath, the hairs ochraceous or rufous; 

 veins oblique, forked, the lowest anterior pinnate. Fertile fronds 



Obi Island. 



IT. IVEP»HItOLH;r»IS, Schott. 



§ 1. LINDSAYOPSIS. 



(1) TV. (licksoilioifles, Christ. 



Also in Ne-iP Giiinea. 



(la) ]^. BSosenstockii, JSmu., in Lautb., Beitr. Flor. Pap., I, 25. 



Stipes + 15 cm. or more long, grooved down the face and provided 

 with caducous, ferrugineous scales, soon glabrescent, as is the rachis. 

 Fronds linear-lanceolate, + 1% m. long and 17 cm. broad, narrowed at 

 both ends. Pinnae sessile, dimorphous, close ; barren pinnae linear-falcate, 

 to S'/j cm. long and P/, cm. broad, long-acuminate, slightly crenate, 

 obhque at the upper base, rounded or cordate at the lower base, the 



