104 POLYPODIUM, § DICTYOPTERIS. 



Cuming's n. 9). Sagenia varia, Brack. Fil. U. S. Expl. Exped. 

 p. 1 83 ?, vix Presl. 



Hab. Luzon, Cuminff,n. 9. Samoan Islands, Milne, n. 530, Brackenridge ? . 

 Fiji Islands, Cairns? (segments of the pinnae deep, the margins lohed). — This is, 

 I think, quite distinct from P. irregulare, with which Mr. Smith seems to have 

 confounded it. 



408. P. (Dictyopteris) Cameroonianwn, Hook. ; caudex ?, 

 stipites stout 4 feet long dark-brown rather glossy, fronds 

 ample probably 3-4 feet and more long and 2|-3 feet wide 

 (judging by the spread of the lowest pair of pinnae) firm- 

 membranaceous dark blackish-green, pinnate below (or sub- 

 bipinnate but the pinnules united by a wing) deeply pinna- 

 tifid above, primary pinnae very large distant lowest pair 17 

 inches long 9-10 inches wdde petiolate upper ones sessile all 

 of them like the upper portion of the frond deeply pinnatifid 

 with rather remote segments from 2-4 inches long \-lh inch 

 broad spreading finely and gradually acuminated all more or 

 less lobato-pinnatifid (except at the acuminated apices), lobes 

 subtriangular ovate entire, venation manifest, costae and cos- 

 tules pale-green the latter distinct corresponding to the mar- 

 ginal lobes, the intermediate veins form an irregular network 

 of rather large areoles (costal ones always present) with or 

 without a free included veinlet, sori rather small at first ap- 

 pearing irregularly scattered but they do form a distant 

 double series one on each side the costa and (though less 

 perfectly) 3-4 other series parallel with the costa. 



Hab. Cameroon Mountains, W. trop. Africa, alt. 3000 feet, G. Mann, n. 1362. 

 — Could I find the trace of an involucre on this Fern I should have been disposed 

 to refer it to some of the forms of Sagenia or Euaspidium among Jspidiea. 

 Among the Nudisori, however, its place is clearly with the Dictyopteris section 

 of Polypodium, with no described species of which does it accord. 



409. P. (Dictyopteris) tenerifrons. Hook. ; caudex small 

 creeping underground scaleless with very few radicles, sti- 

 pites few remote slender glossy stramineous, the base very 

 tomentose with a few sparse scales partly subterraneous at- 

 tached to the caudex by a small point, fronds thin membrana- 

 ceous pale-green glabrous subpuberulous on the veins 6-9 

 inches long quite as broad as long cordato-deltoid subternate 

 or pinnated with 3-9 subfalcate pinnae, lateral ones nearly op- 

 posite petiolate lowest pair half-ovate acuminate 4-6 inches 

 long lobato-pinnatifid those of the superior margin with broad 

 ovate nearly equal subdenticulate blunt lobes, the inferior ones 

 much elongated and acuminated the basal ones again lobato- 



