APPENDIX. 14. DENNSTAEDTIA. 805 



Copel), lo 30 — 35 c.M. broad, oblong, acuminate, hardly narrowed at the 

 base. Pinnulae ± 35 on each side, petiolate, oblong, acuminate, lowest dis- 

 tant, + 16 c.M. long, 4—7 c.M. broad, broadest at the base, upper base 

 truncate, lower cuneate; higher pinnulae approximate. Tertiary divisions 

 close, rather imbricate, decurrent, ± 25 on each side, lowest anterior largest, 

 ± 2 C.M. long, + '/2 c.M. broad, deeply pinnatifid. Lobes oblong, obtuse, 

 crenate on the upper side, ± 7^ c.M. long, ± ^4 c.M. broad. Texture ri- 

 gidly coriaceous; colour grey-green; costae and veins clothed with short, ad- 

 pressed, rufous hairs. Sori in the sinuses, 1 or rarely more on each lobe, 

 marginal. 



Mindanao. 



(76) O. Hooveri, Citrist, Philipp. Journ., II, 169. 



Rhizome creeping. Stipes I'/i — 2 M. long. Fronds + 2 M. long, 

 subdeltoid, 4-pinnatifid, the rachises pubescent with short, strigose, ru- 

 fous hairs. Pinnae ± 60 c.M. long, to 30 c.M. broad, short-stalked, hardly 

 narrowed at the base, acuminate. Pinnulae alternate, approximate, petiolulate, 

 + 35 on each side, jto 15 c.M. longjto 4 c.M. broad, the upper base produced, 

 the rachis not winged. Tertiary segments + 18 on each side, close, 

 subimbricate, obtusely ovate, ± 1 c.M. long, ± '/a c.M. broad, cut down to 

 the costa, unequal-sided, upper base produced, truncate, lower cuneate. Ul- 

 timate segments 3 — 4 on each side, cuneate-oblong, obtuse, + 3 m.M. long, 

 + 2'/j m.M. broad, crenato-lobate in the fertile, elongate and more acutely 

 toothed in the barren fronds. Texture often flrm ; colour dark-green ; 



surfaces pilose with whitish, tortuous hairs; veins pinnate and forked in the 

 ultimate segments. Sori roundish, 1 (or rarely more) on each ultimate seg- 

 ment, placed on the short, obtuse, basal teeth; indusium thin, membrana- 

 ceous, grey, soon evanished. 



Mindanao, 



* (10) O. cuncata, Moore. — Insert as a synonym: Silolobium 

 cuneatum, J. Sm., (oldest name). 



» (12) D. flaccida, Bernh. — Insert as a synonym: Trichomanes 

 ftaccidum, ForsL, (oldest name). 



(13a) O. Elmerl, Copel., Leafl., I, 233. 



Rhizome creeping, black, aculeate. Stipes to 25 c.M. apart, probably 



