﻿806 APPENDIX. 14. DENNSTAEDTIA. 



to 2 M. long, aculeate. Fronds to 3 M. long, ± 1— 1^2 M. broad, 3-pinnate, 

 the main rachis short-aculeate, castaneous. Pinnae opposite, apparently arti- 

 culate to the main rachis, broadly lanceolate, 20 — 25 c.M. broad, acuminate, 

 the rachis aculeate towards the base. Pinnulae sessile, pseudo-articulate, the 

 lower ones opposite, the higher alternate, acuminate, the rachis slightly pu- 

 bescent. Leaflets sessile, obtuse, auriculate, to l^^ c.M. long, to 7 m.M. 

 broad, the edge cut more than Va'^ay down to the costa. Texture subco- 

 riaceous; costae slightly pubescent beneath, the rest naked. Sori to 7 on 

 a leaflet, at the tops of the sinuses, indexed. 

 Luzon. 



* (14) D, isumatrana, v. A. v. R. — Insert: Bull. Dep. Agr. I. 

 N., 1908, XVIII, 6. 



15. OLE^\.TVI>I«,.A-, Cavanilles. 



• (1) ©. CuspldaSa, JKfc. — A form gathered in New Guinea has 

 the rhizome scales subulate and much deflexed at the apex, the fronds + 

 25 — 30 c.M. long, + 4 — 5 c.M. broad, the surfaces hairy on the veins, the 

 indusia fugacious. — This may be Copeland's 0. cohibrina, Copel., var. mem- 

 branacea. 



* (3) O. eolubrina, Copel., var. bracbypus. — Copeland distingui- 

 shes 2 forms (Philipp. Journ., Ill, 32 — 33): 



Var. nilida ( ? var. brachypus) : Fronds to 40 c.M. long, ± 2 c.M. broad, 

 coriaceous, soon naked, glossy. 



Var. membranacea ( ? 0. cuspidata, Bk). Fronds + 20 c.M. long, + 

 2'/^ c.M. broad, narrowly caudate, pubescent, ciliate, membranaceous. Sori 

 small, in an irregular row + medial between the costa and margin. 



(4a) O. l¥eriieri, Rst., Fed., Rep., V, 40. 



Rhizome long, scandent, subcompressed, branched, scaly ; scales dense, 

 lanceolate, deciduously acuminate at both ends, at length ovate, adpressed, 

 peltate, the centre black, the margin rufo-ferrugineous, fimbriate; branches 

 3 — 10 c.M. or more apart, simple or branched again, slightly scaly, the ul- 

 timate ones to '2 — S c.M. long, bearing the fronds. Stipes ± 2 — 4 c.M. 

 long, articulate ± at the base. Fronds dimorphous. Barren fronds elongate- 



