﻿71 POLTPODIDM. § 6. PLEOPELTIS. b*. LEPISORUS. 63S 



'naked; veins immersed; midrib distinct. Fertile fronds linear, 5—13 c.M. 

 long, ± 5 m.M. broad, on stipes ^Vj— 8 c.M. long, with a lobe under each 

 sorus. Sori + 20 in a row on each side of the midrib, large, giving the 

 frond a knotted appearance. 

 Philippinnes. 



* (146) P. istenopteriis, -Bfc., Journ. of Bot., XVII, 45 ; Christ, Ann. 

 Btz., XX, tab. Ill, fig. 4. 



Rhizome wide-creeping; scales dense, squarrose, brown, the base round- 

 ish, peltate, the point long, fine, linear. Stipes nearly none or to 4 c.M. 

 long, the fertile fronds on the longest stipes. Fronds dimorphous. Barren 

 fronds lanceolate-spathulate, 3—5 c.M. long, Vj— 1 c.M. broad, the apex blunt- 

 ly rounded, the edge entire, thickened, the base gradually narrowed, ± cu- 

 neate. Texture very rigidly coriaceous; costa conspicuous; veins hidden. Fer- 

 tile fronds 20 — 30 c.M. long, the lower half narrowly lanceolate, the edge 

 entire, the base cuneately narrowed, the apex narrowed gradually into the 

 narrow, linear, repand upper half of the frond. Sori immersed, rather dis- 

 tant, confined to the linear upper half of the frond, placed in the projections 

 of the waves, 1 to each lobe, prominent on the upper surface. 



Borneo. 



* (147) I». sorideosi. Hie., Hk. Bk., Syn. Fil., 355; Hk., Spec. Fil., 

 V, tab. CCLXXXIII, B. 



Rhizome wide-creeping; scales squarrose, the base roundish, peltate, the 

 apex long, fine, linear. Stipes S'/j — 1% c.M. long, slender, naked, scattered. 

 Fronds linear-lanceolate, 10 — -30 c.M. long, Vj — 1'/2 ^■^^- broad, narrowed very 

 gradually to both ends, the barren ones with the edge entire or repand; fer- 

 tile fronds toothed with the teeth distant and rounded, or deeply and very 

 irregularly incised with the lobes spreading, oblong, bluntly rounded, 1 — 50 

 m.M. apart, the sinuses broadly rounded. Texture rigid, coriaceous; sur- 

 faces naked; no main veins; areolae fine; free veinlets rare. Sori submar- 

 ginal, terminal on the lobes, 1 to each tooth or lobe, deeply immersed, form- 

 ing very distinct papillae on the upper surface. 



Borneo. 



* (148) I». neglectum, Bl., Flor. Jav., II, 135, tab. LIV, fig. ]. 

 Rhizome moderately long, creeping, dirty-brown ; scales dense, small, lan- 

 ceolate-subulate, recurved, the younger ones reddish-brown, ereso-ciliate, villo- 



