414 72. CYCLOPHOEUS. § 2. NIPHOPSIS. 



above, convex beneath, stellato-tomentose, hidden by the rhizome scales. 

 Fronds nearly uniform, straight, Knear-lanceolate, to 40 cm. or more long, 

 + 3—5 cm. broad, the base cordate, truncate, rounded or rarely shortly 

 cuneate, the edge entire, subrevolute, palish, the apex rather acute or 

 obtuse; fertile fronds somewhat contracted in the soriferous upper region. 

 Texture chartaceous when dry; upper surface fulgent-tomentose, soon 

 calvescent, the hairs dense, subadpressed ; under surface densely tomentose, 

 the hairs pale when young, afterwards dark-brown, looser, long-branched, 

 the branches slender, subflexuose ; costa straight, prominent on both sides, 

 naked above; main veins distinct, erecto-patent, straight, forked near the 

 margin; veins prominent beneath, forming 1 row of + 5 — 6 primary 

 areolae between the main veins; venulae simple or forked, free, or 

 anastomosing and forming smaller secondary areolae with free included 

 veinlets. Sori large, semiglobose, 2 in each primary areola, placed in 2 

 rows between the main veins, 4 — 5 in a row; receptacle when dry 

 somewhat elevated and corresponding with a small or dot-like depression 

 on the upper surface; sporangia intermixed with stellate hairs. — Near 

 C. distichocarpus G. Ghr. — Living specimens have the receptacle 

 somewhat concave, without corresponding depression on the upper side 

 of the lamina. 

 Sumatra. 



(31a) C. lancifolius, e. A. ». «., in Bull. Btz., 1916, XXIII, 8. 



Rhizome thick, wide-creeping, the scales ovate-lanceolate, pale-fuscous, 

 acute or acuminate, entire, at length oblong and erose with a peltate, 

 black-brown or castaneous centre. Stipes scattered, + 20 — 25 cm. long, 

 bluntly angled, at length naked. Fronds lanceolate, + 55 — 65 cm. long 

 by 4 cm. broad below the middle, narrowed gradually to a bluntish apex 

 and a slightly decurrent base, the edge irregularly recurved when dry. 

 Texture flaccido-coriaceous ; upper surface naked (giabrescent ?) ; under 

 surface coated with a dense tomentum consisting of pale-rufous wool and 

 crowded short-branched pale-grey-brown stellate hairs intermixed with scat- 

 tered black-brown or castaneous ones ; costa prominent on both sides ; main 

 veins slightly visible, oblique; areolae hidden. Sori proportionally small, 

 distant from the margin, in 5 — 6 oblique rows on each side of the costa, 

 in 4 — 5 rows between the main veins, when young immersed in the 

 tomentum, in the upper half of the fronds. 



Sumatra. 



mmmauumaai 



