﻿22. DRYOPTERIS. § 1. LASTRAEA. 197 



* (44) D. sparisa, O. Hixe, C. Chr., Ind. Fil. ; Aspidium sparsum, 

 Spr., Rac, Flor. Btz., I, 173; Lastraea sparsa, Moore, Bedd., Ferns S.I., tab. 

 CIII; Nephrodium sparsum, Don, Hk. Bk., Syn. Fil., 276, p.p.; — var. Raapii. 



Rhizome suberect; the scales dense, light-brown, entire, thin, oblong. 

 Stipes 15—40 c.M. long, ± scaly. Fronds 30—60 c.M. long, 10—50 c.M. 

 broad, 5 — 4-pinnatifid at the base. Pinnae distant, short-stalked, 5% — 10 

 c.M. broad, acuminate. Highest pinnae simple, oblong, blunt, obliquely cuneale 

 at the base. Lowest pinnulae largest, short-stalked, blunt or acute, 1 — 2 X 

 pinnalifid at the base, those on the lower side prolonged. Ultimate free 

 segments obliquely cuneate at the base, the apex mostly blunt; ultimate lobes 

 oblong, blunt, the margin toothed with few, distant, sharp, small teeth, the 

 teeth not rarely solitary on the anterior side of the larger lobes. Texture 

 firm, membranaceous to papyraceous ; rachis stramineous or brownish lik^ 

 the stipe, naked like both surfaces. Sori + near the costae, often 1 to eaeh 

 ultimate lobe. 



Var. Itaa|iii: Lower ultimate segments truncate or subcordate at 

 the base. Each lobe with a single, small tooth on the upper side, often 

 nearly in the top of the sinus. (*). 



Malaya; South. China, North. India, Ceylon, Mauritius; — var. Raapii : 

 Tioblong (Raap, No. 3). 



* (45) O. Iiaciborsik.li, ». A. v. R.; Aspidium sagenioides, Rac. 

 (not Mett.), Flor. Btz., I, 178. 



Stipes long, clothed with lanceolate scales and gland-like hairs. Fronds 

 deltoid-lanceolate, to 100 c.M. long, to 60 c.M. broad. Pinnae large, distinctly / 



stalked, deltoid, the stalks to ± 4 c.M. long. Pinnulae lanceolate or lanceo- ^ 

 late-oblong, short-stalked, the lowest posterior ones the longest, the higher 

 ones oblong, sessile, decurrent at the base, the highest ones united at the 

 base by short, intermedial lobes, the longest to 18 c.M. long, to 8 c.M. broad, 

 deeply pinnatifid or rarely subpinnate at the base. Tetriary segments to 4 

 c.M. long, 1 — ly,^ c.M. broad, bluntish or acute, the smaller ones entire, the 

 larger ones toothed or not deeply lobed. Texture herbaceous; rachises finely 

 short-hairy; both surfaces sparingly fibrilloso-pilose ; main veins (and veins) 

 forked or pinnate in the ultimate lobes ; between each 2 lowest veins of conti- 

 guous groups is a free, simple, forked or pinnate vein which unites the midrib 

 with the top of the sinus. Sori nearer the edge than the main veins, 



Java. 



(*) See also D. purpurascens, v. A. v. R. 



