86 7. GLEIOHENIA. § 3. MEBTENSIA. 



ciliate, rather deciduous, partly minute, floccuioso-tomentose (wool-like), 

 rather persistent. Primary branches 3 — 4 X forked ; lowest internodations 

 2 — 3 cm. long, secondary ones brown, the following foliaceous, cut 

 down nearly to the costa, the terminal ones linear-lanceolate, + 20 — 25 

 cm. long, 2 — 2% cm. broad, acuminate. Ultimate segments nearly 

 horizontal, ± I'/j — 2 mm. broad, bluntish, crenate-dentate at or towards 

 the apex, dilated and confluent at the base. Texture thinly chartaceous ; 

 costae scaly beneath, the scales similar to those of the lower branches 

 but more persistent, the largest spreading, in 2 opposite rows; under 

 surface deciduously flocculent on the costulae and veins, at length often 

 naked; veins forked. Sori medial; sporangia 8— 4. 

 New Guinea. 



(18) C hiispida, Mett. 



Also in Luzon. 



(U) O. veistita, Bi. 



The scales of the rachises often placed in 2 opposite spreading rows, 

 those of the costulae often soon caducous. 



(16) G-. amboinensis, v. A. v. i?. 



Omit this species, it being an abnormal form of G. hirta Bl. 



(17) G. dolosa, Copel. (not C. Chr.) 



Omit this species, it being an abnormal form of G-. hirta Bl. 



Species of an uncertain systematical place. 



(18) O. bolanica, nst., in Fed., Rep., XII, 162. 



Fronds pinnate in the upper part, the rachis and costae provided 

 beneath with scattered, ovate or lanceolate, shortly acuminate, ciliolate 

 scales. Pinnae opposite, 4 times forked, on stalks + 2 cm. long, the 

 internodations + I'/j cm. long, the lowest nudate, the others deeply 

 pinnatifid, the ultimate branches linear, ±12 cm. long by 7 mm. broad, 

 narrowed gradually towards the apex. Lobes deltoid, + 3 mm. each 

 way. Texture coriaceous; upper surface naked, lower sparingly scaly on 

 the veins; veins ± 4 on a side, forked. Sori consisting of 3 - 5 capsules. 



Neiv Guinea. 



