168 22. DEYOPTERIS. § 1. LASTBEA. 



spreading, the lowest the largest, obliquely deltoid, produced on the 

 lower side, to 17 ',2 cm. long, ± 6 — 9 cm. broad at the base,, acuminate. 

 Pinnulae many, the higher adnate, decurrent, more or less connected, 

 oblique, the lower free, short-stalked, the lowest posterior the largest, to 

 7 em. long, + 1 '/.> — 2 cm. broad, deeply pinnatifld, acuminate Tertiary 

 segments oblong or linear-oblong, to 1 '/.j cm. long, 4 — 5 mm. broad, 

 blunt, entire or crenate, or the lowest posterior lobate-dentate. Texture 

 firm-herbaceous; surfaces naked; costae pubescent above, sUghtly scaly 

 beneath; veins simple or forked or sometimes twice forked. Sori small, 

 medial on simple veins or veinlets, or at the forking of the forked 

 veins; indusium breaking irregularly. 

 Sumatra. 



(56) O. piirpurascens, Christ (not v. A. v. R.), in Philipp. 

 Journ., IF, 213. 



A form gathered in Java by Paidan {Mt. Salak) differs from the 

 typical form in having all the dimensions much larger. Fronds up to 

 160 cm. long and 110 cm. broad; pinnulae up to 15 cm. long and 5 

 cm. broad. 



(56a) D. Iialabacensis, Christ. 



A specimen received from Sibnyan differs from Christ's orginal 

 diagnosis in having the dimensions somewhat smaller, the stipe glabrescent, 

 the fronds 3-pinnate at the base only, the tertiary segments subentire 

 except the largest which are moderately deeply lobed. 



(57rt) O. glabrior, CopeL, in Philipp. .Journ., V^, 283. 

 Near D. crenata 0. Ktse but the fronds larger, slenderer, much 

 looser, more naked, and the sori smaller. 

 Borneo. 



(58) D. rhodolepis, C. Chr. 



Omit this species here. See No. 62?. 



(58a) D. dtibia, Copeh 



Also in Negros. 



(585) D. cleconiposita, O. Ktme, C. Chr., Ind, Fil. ; Nephrodium 

 decompositum., R. Br., Hk. Bk., Syn. Fil., 281. 



