﻿190 , 22. DRYOPTERIS. § 1. LASTRA^EA. 



reduced. Texlure herbaceous; colour pale-green; racliis and surfaces more 

 or less villose; veins simple, 6 — 12 on a side. Sori nearer the edge than the 

 midrib ; indusium reniform, persistent, hairy. — General aspect of D. parasi- 

 tica, 0. Kfze, but much larger. 



New-Guinea; Polynesia, Japan, China, Trop. Africa, Trop. ^ Subtrop. America. 



(26) D. exigiia, O. Ktxe, Rev. Gen. PI., II, 812; D. philippim, C. 

 Chr., Ind. Fil. ; Aspidium exiguum, Kze, Mett., Farng., IV, Phegop. & Aspid., 

 No. 180; Nephrodium exiguum, Ilk, Hk. Bk., Syn. Fil., 267. 



Stipes tufted or approximate, 12 — 2S c.3I. long, slender, grey, villoso- 

 tomentose with short hairs like the rachis. Fronds 20 — 25 c.M. long, 5V2 — S 

 c.M. broad. Pinnae numerous, approximate, ovate-falcate, %■ — 1 c.M. broad, 

 blunt, the base cordate, sometimes subauriculate on the upper side, the edge 

 cut ± Va'Way down or more to the costa into close, blunt lobes; lovrest 

 pinnae reduced. Texture papyraceo-herbaceous ; veins obscure, 2 — 5 on each 

 side of the main veins (constulae). Sori near the constulae. 



Philippines. 



(27) D. COiiteraiiinoicleiS, C. Chr., Ind. Fil.; Nephrodium simulans, 



Bk., Journ. of Bot., XXVIII, 106 (not Journ. of Bot., XXVI, 325, norHk. Bk., 

 Syn. Fil., 300\ 



Stipes short, naked. Fronds lanceolate-oblong, 2-pinnate, to 30 c.M. long, 

 + T'/i c.M. broad at the middle, narrowed gradually to the base. Pinnae 

 lanceolate, 1 — iVj c.fll. broad, the central ones 2^2 — 4 c.M. long, cut down 

 ± to the costa into linear-oblong segments ± 2 m.M. broad. Texture mode- 

 rately firm; rachis densely crinite; veins simple, erecto-patent, 5 — 6-jugate. 

 Sori subcostal; indusium persistent. 



New Guinea. 



(28) ■>. LiUersiiCiiii, C. Chr., Ind. Fil.; Aspidium Luerssenii, Christ, 

 Bull. Herb. Boiss., VI, 193 ; Nephrodium Luersenii, Harr., Journ. of Linn. Soc, 

 Bot., XVI, 29. 



Stipes clustered, firm, shining, light-purplish. Fronds 45 — 75 c.M. long, 

 15—25 c.M. broad, oblong. Pinnae 10—20 c.M. long, 274 — ^ c.M. broad, 

 lanceolate, acuminate, jointed at the base, cut tlown nearly or sometimes quite 

 to the costa into numerous linear or oblanceolate lobes 2 '/j — 4 c.M. long, 2 V2 — 4 

 m.M. broad. Lower pinnae very small. Texture membranaceous; surfaces 

 naked; veins 8 — 12 on a side, simple, free, distant. Sori terminal on the veins. 



Philippines. 



