190 22. DRYOPTBRIS. § 1. LASTRAEA. 



reduced. Texture herbaceous; colour pale-green; rachis and surfaces more 

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

 midrih ; indusium reniform, persistent, hairy. ■ Gcnoral aopoot of Di paraoi 

 tioai O i KiBOf butumuoh largof. 



ISew-Guinea; Polynesia, Japan, China, Trap. Africa, Trap. ^ Subtrop. America. 



(26) D. exigua, O. Jr#«e, Rev. Gen. PI., II, 812; D. philippina, C. 

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

 No. 180; Nephrodium exigmim, Hk , Hk. Bk., Syn. Fil., 267. 



Stipes tufted or approximate, 12 — 25 c.M. long, slender, grey, villoso- 

 tomentose with short hairs like the rachis. Fronds 20 — 25 c.M. long, 3'/j — 5 

 c.M. broad. Pinnae numerous, approximate, ovate-falcate, '/a — 1 c.M. broad, 

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

 cut + '/j-way dovra or more to the costa into close, blunt lobes; lowest 

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

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



Philippines. 



(27) D. conterillinoides, C. Chr., Ind. Fil.; Nephrodium simulatis, 

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

 Syn. Fil., 500,\ 



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

 + 7'/j C.M. broad at the middle, narrowed gradually to the base. Pinnae 

 lanceolate, 1 — l'/^ c.M. broad, the central ones 2^/^ — 4 c.M. long, cut down 

 + to the costa into linear-oblong segments + 2 m.M. broad. Textiu'e mode- 

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

 Sori subcostal; indusium persistent. 



New Guinea. 



O. liUersscnii, C. Chr., Ind. Fil.; Aspidium Luerssenii, Christ, 

 Bull. Herb. Boiss., VI, 195; Nephrodium Luersenii, Harr., Journ. of Linn. Soc, 

 Bot., XVI, 29. See Supplement 1. 



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

 15—25 c.M. broad, oblong. Pinnae 10—20 c.M. -long, 27^ — 4 c.M. broad, 

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

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



