﻿22. DRYOPTERIS. § 1. LASTRAEA. 199 



Rhizome erect. Stipes 20 — 25 c.M. long, furnished with long, hair-like 

 scales as are the rachises, costae and costulae. Fronds 30 — 60 c.M. long, 

 narrowly deltoid-lanceolate. Lower pinnae largest, deltoid, with the lower pinnulae 

 considerably elongated; upper pinnae 7 72 — 10 c.M. long, pinnulae 174 — 2 

 c.M. long, the lower ones cut down nearly to the costa into lanceolate, entire 

 or slightly crenated lobes. Texture firm-herbaceous; surfaces sparingly covered 

 with minute hairs; costulae of ultimate segments wavy; veins distant, simple 

 or forked, not reaching the margin. Sori medial ; indusium f 



Malacca. 



* (50) U. ^ilis, O.Mtsie, C. Chr., Ind. Fil. ; Aspidium vile, Kze, Rac, 

 Flor. Btz., I, 173; Nephrodium vile, Bk., Hk. Bk., Syn. Fil., 499. 



Rhizome suberect, densely clothed with rigid, pale, linear-lanceolate, ci- 

 liate scales. Stipes 10 — 45 c.M. long, clothed like the rachis with subulate, 

 blackish, brownish or pale, spreading scales, which become shorter towards 

 the apex of the frond. Fronds ovate-deltoid, 3-pinnatifid (rarely 2-pinuate), 

 25 — 60 c.M. long, 15 — 40 c.M. broad. Pinnae lanceolate-deltoid, short-stalked, 

 lowest largest. Pinnulae oblong to lanceolate, lowest sessile or subsessile, to 

 3Y2 c.M. long, to 1 c.M. broad, deeply pinnatifld. Segments close, oblong- 

 deltoid, the margin recurved and crenated. Texture coriaceous ; under surface 

 villose. Sori numerous, occupying nearly the whole under surface of the 

 small lobes; indusium minute, hairy. 



Java. 



* (51) O. intermedia, O.Ktzey Rev. Gen. PL, II, 813; ( ? D. 

 rhodolepis, C. Chr., Ind. Fil.); Aspidium intermedium, BL, Rac, Flor. Btz., 

 I, 176. 



Rhizome short-creepibg, clothed with linear-lanceolate, pale-brown, entire 

 scale§. Stipes 3 — 15 c.M. long, furnished with broadly obovate, suddenly 

 acuminated, blackish-brown, spreading scales. Fronds 2 — 5-pinnatipartite, 

 obovate-lanceolate, 5 — 55 c.M. long, 3 — 15 c.M. broad. Lower pinnae short- 

 stalked, lanceolate or deltoid, unequal-sided (the lower side produced), to 

 3 c.M. broad; higher pinnae sessile. Lobes 2 — 3 m.M. broad, the lowest ones 

 entire or pinnatipartite. Texture herbaceous ; rachis scaly like the stipe ; 

 main veins naked or slightly scaly beneath ; veins simple. Sori medial on the 

 veins, 1 — 3 on each side of the main veins (or costae). — See the information 

 in Rac, Flor. Btz., I, 177. 



Malaya. 



