45«. PTERIS. § 1. EUPTEEIS. 249 



Rhizome short, erect. Stipes tufted, slender, + 6 — 10 cm. long, 

 black-hrown, glossy, naked. Fronds subdeltoid, + 10—15 cm. long, the 

 rachis like the stipe. Pinnae opposite, 3 on each side below the terminal 

 one; terminal pinna lanceolate, + 7 — 10 cm. long, + 1 '/^ — 2 cm. broad 

 at the base, caudate-acuminate and entire or subcrenate in the upper 

 pai't, cut down nearly to the costa into several erecto-patent, blunt or acute, 

 remote lobes + 2 — 3 mm. broad, decurrent at the base; highest pinnae 

 erecto-patent, linear, flexuose or upcurved, adnate, 8 — 6 cm. long, to + 

 3 mm. broad, entire or more or less pinnatifid; lowest pinnae largest, + 

 8 cm. long, erecto-patent, often upcurved, sessile or short-stalked, caudate- 

 acuminate and entire to irregularly lobed in the upper part, deeply and 

 irregularly pinnatifid in the lower part, the lobes varying from 1 — 10 mm. 

 long, to + 3 mm. broad, the lowest posterior lobe elongated, to 5 cm. 

 long, not rarely free but adnate. Texture firm; surfaces naked; veins 

 not very distinct, often forked. Sori lateral on the longer lobes, terminal 

 on the reduced ones, not occupying the sinuses and the apices of the former. 



New Guinea. 



(216) Pt. niix.ta, Chvist, in Schum. & Laut., Flor., dent. Sch.geb.' 

 SuppL, 45 ; Pt. quadriaurita, Retz, var. Lauterbachii, Christ, p. p. ; Pf. 

 heterogenea, v. A. v. R., in Bull. Btz., 1912, VII, 25, tab. 11. 



Near Pt. gracilUma Est. but the stipes and fronds longer, the fronds 

 to 25 cm. long, the pinnae larger, 4 — 5-jugate, the lowest pinnae often 

 forked at the base with similarly pinnatifid, mostly short-stalked fork- 

 branches, the lobes broadly but not deeply crenated, straight, longer, and 

 the caudiform terminal lobes often very conspicuously elongated. 



NeiD Guinea. 



(22c) Pt. salakensis, ». A. v. R., in Bull. Btz., 1912, VII, 26. 



Near Pt. pluricaudata CojM. but the stipes, costae and costulae deci- 

 duously and minutely flbrillose; fronds ovate, larger, to 35 cm. long, to 

 20 cm. broad ; pinnae 1 on each side below the terminal one, very deeply 

 pinnatifid, 6 — 10 cm. broad, the central (terminal) one the broadest, the 

 lateral ones not forked at the base, short-stalked, arcuate-ascending; 

 segments nearly horizontal, 5 — 8 mm. broad, connected by a narrow wing, 

 the lowest anterior one suddenly and slightly decurrent upon the petiole, the 

 fertile ones entire at the obtuse barren apex ; upper surface sparingly and 

 very minutely fibrillose; texture papyraceous; veins distinct, naked; sori 



