I 



22. DRYOPTERIS. § 1. LASTBEA. ,l63 



beneath; veins + 8—10 on a side, forked in the teeth or lobes, the 

 longest not rarely twice forked or sparingly pinnate, the higher or 

 shortest simple. Sori medial or the higher subcostular ; indusium minute. 

 Sumatra. 



(36&) O. olivacea. Rst., in Hedwi., LVI, 352. 



Rhizome creeping, the scales brown, lanceolate. Stipes to 50 cm_ 

 or more long, oUve-brown, scaly towards the base. Fronds elongate-oblong 

 from a cuneate base, about 75 cm. long, 80 cm. broad below the middle, 

 acute, 2-pinnatifid. Pinnae subhorizontal, to about 20 on each side below 

 the pinnatifid apex, linear, acuminate, cut to about ^/^-way down to the 

 costa, the apex coarsely serrate; higher pinnae sessile, adnate or 

 decurrent-confluent, following short-stalked ; largest pinnae to 1 8 cm. 

 long by 4 cm. broad; lowest pinnae somewhat abbreviated, produced on 

 the lower side. Lobes linear, subhorizontal, subfalcate, acute, coarsely 

 serrate, decurrent, the sinuses acute or rounded. Texture membranaceous ; 

 surfaces naked, ohve-green; veins forked, with the anterior veinlet often 

 prohferous. Sori small, medial, 7—8 on a side; indusium naked. 



New Guinea. 



!•• Kanileriaua. S,st., in Fed., Rep., X, 834. 



Stipes castaneous, glossy. Fronds ovate-oblong, to 70 cm. long, 40 

 cm. broad, acuminate, 8-pinnatifid. Pinnae + 18 on a side beloW the 

 pinnatifid apex, remote, often horizontal, alternate, petiolate, linear- 

 lanceolate, the largest + 20 cm. long, 5 cm. broad, shortly acuminate, 

 somewhat narrowed at the base, the lower sliorter, deflexed, the higiier 

 ascending. Pinnulae short-stalked, spreading, subapproximate, subfalcate, 

 deltoid-oblong, acute, inciso-lobate, truncate and auricled at the upper 

 base, shortly cuneate at the lower base, the central and higher ones 

 contracted at the base, adnate or decurrent. Lobes linear or oblong, 

 obtuse, crenate. Texture subcoriaceous ; surfaces nearly naked; rachises 

 sulcate and shortly tomentose above, the secondary ones narrowly 

 winged; veins immersed, pinnate in the lower lobes, forked or simple in 

 the higher lobes. Sori subcostular; sporangia intermixed with long-stalked 

 utriculiform paraphyses; indusium coriaceous, naked. 



New Guinea. 



(39j D. edulenta, v. A. v. R. (^not 0. Ktze). 



Omit this name, it should be D. edentula 0. Ktze. 



