﻿^24 22. DRYOPTERIS. % 2. NEPIIRODIUM. 



* (102) JD. parasitica, O.tttxe, C. Ghr., Ind. Fil. ; Nephrodium 



molle, R. Br., (not Deso.), Rac, Flor. Btz., I, 188; Bedd., Ferns S.F., tab. 

 LXXXIV; N. parasiticum, Desv. (not M.), Copel, Polypod. Philipp., 32; Asjojrfmm 

 parasilicum, Sw. (not Melt.), Christ, Farnkr. d. Erde, 243 ; Polypodium para- 

 siticum, L., (oldest name). 



Rhizome erect or suberect, clothed with dark-brown, entire, lanceolate 

 scales. Stipes tufted or subremote, 15 — 30 c.M. or more long, slender, den- 

 sely and deciduously hairy; hairs short. Fronds ovate-lanceolate, to 30 — 60 

 c.M. long, 12^/2 — 30 c.M. broad. Pinnae spreading, approximate, ^2 — ^^2 c-M. 

 broad, cut + V2"Way down to the midrib into scarcely falcate, blunt or acute 

 lobes, the base not narrowed, the apex acuminate. Lower pinnae distant, 

 not rarely shorter than the next in order, the lowest sometimes slightly 

 dwarfed. Texture herbaceous, rachis and surfaces finely hairy; main veins 

 pinnate in the lobes with 6 — 9 veins on each side, only the lowest anasto- 

 mosing. Sori medial on the veins; capsules naked; indusium villose. — 

 A form found in Borneo {forma caiidata) has the fronds caudate and 

 subglabrous, and a form gathered in Sumatra {forma repensj has the rhizome 

 wide-creeping. 



Tropical and subtropical regions all round the world. 



* (103) O. indiea, ». Jf. «?. JE.,« N. pennigerum, Bedd., Handb. Ind. 

 Ferns, Suppl., 73; — var. malayensis, Bedd., 1. c, 74. 



Rhizome erect or short-creeping. Stipes hairy or nearly naked, to 120 c.M. 

 long. Pinnae numerous, spreading, 20 — 25 c.M. long, 2^/2 — 4 c-M. broad, 

 the fertile sometimes much contracted, the apex acuminate, the edge cut down 

 only + ^4 towards the cosla into oblong, falcate lobes; lowest pinnae not 

 reduced. Texture herbaceous; rachis hairy; upper surface slrigose on the 

 costae, otherwise naked or more or less slrigose particularly near the edges, 

 under surface hairy on the veins; veins 8 — 12 pair, 5 — 8 pair anastomosing 

 except in contracted, fertile pinnae. Sori medial on the veins; indusium 

 generally persistent. 



Var. lualayeiiisis : Pinnae rather deeply cut ; surfaces rather den- 

 sely clothed with short hairs; only 2 — 3 lower pairs of veins anastomosing. 



Burmah, Br. India, Ceylon; — var. malayensis: Malacca, Tenasserim. 



(104) D. isal&ayeiisiiS, C. Chr., Ind. Fil. ; Nephrodium sakayense, 

 ZeilL Bull. Soc. Bot. Fr., XXXII, 75. 



Rhizome erect. Fronds densely tufted, bipinnatifid, 100—120 c.M. long, 



