﻿142 14. DENNSTAEDTIA. 



into oblong-rhomboidal pinnulae 6 — 9 m.M. long, 4 — 8 m.M. broad, which 

 are truncate at the base on the lower side. Both surfaces naked ; veins sub- 

 flabellate. Sori solitary at the upper margin of the pinnulae; indusium cup- 

 shaped, firm. 

 New Guinea. 



(2) ? D. reisinifera, Mett., Ann. Mus. Bot. L. B., IV, 290. 

 Cheilanlhes resinifera, BL, Enum., 138; Hypolepis resinifera, Hk., Spec. Pil., 

 II, 65. 



Stipes rough. Fronds 2-pinnatifid towards the apex, 3-pinnatifid at the 

 base. Pinnulae sessile, lanceolate, acuminate, deeply pinnatifid, the higher 

 ones confluent. Segments oblong, obtuse, inciso-crenate, subauriculate at the 

 upper base. Texture subcoriaceous ; main rachis tomentose above; under sur- 

 face resinoso-punctate. Sori solitary at the inner edge of the crenulations ; 

 indusium dentiform. 



Java. 



(3) D. eryllirorachis, mets, in Engl. & Prantl, Nat. Pfl.Pam., 

 I*, 218; Dicksonia erylhrorachis, Christ, Ann. Btz., XV, 86, tab. XIII, fig. 7, a — b. 



Stipes erect, polished like the rachises, slightly aculeate or muricate below. 

 Fronds large, deltoid-ovate. Pinnae spreading, straight, the lower ones to + 

 30 c.M. long. Pinnulae linear-lanceolate, acuminate, sessile, to ± 6 c.M. long 

 and to + 2 c.M. broad, rather approximate, the lower part cut down to 

 the rachis into S — 8 close ultimate leaflets, the apex pinnatifid. Leaflets 

 ovate-rhomboidal, erecto-patent, slightly lobed, bearing the sori in the sinuses. 

 Texture rigid; surfaces glaucous, the under one paler coloured than the upper 

 one. Sori small, 1 — 3 to a leaflet; indusium brownish, glossy, subglobose. 



Celebes, New Guinea. 



(4) O. ailipla, Bedd., Journ. of Bot., XXXI, 227 ; Dicksonia ampla, 

 Bk. Journ. of Linn. Soc, Bot., XXII, 223. 



Rhizome creeping, clothed with dark-coloured scales. Fronds ±120 c.M. 

 long or longer, deltoid, o-pinnate. Pinnae oblong-lanceolate, the lowest ones 

 60 — 90 c.M. long, + 50 c.M. broad. Pinnulae lanceolate, multijugate, cut 

 down nearly or quite to the costa into oblong, parallel, adnate, close ultimate 

 segments 4 — 5 m.M. broad. Texture moderately firm; rachis brown, unarmed, 

 pubescent, canaliculate; surfaces naked; costulae pinnate; veins 6 — 8 on each 



