494 APPENDIX. 3. ALSOPHILA. 



about 10 — 12 cm. long by 2'/.2 — 3 cm. broad at the truncate base, deeply 

 pinnatifld, crenate at the acuminate apex, the costa naked above, beneath 

 tomentose Uke the rachises, the tomentum intermixed with a few minute, 

 subulate, castaneous, deciduous squamules. Segments spreading or the 

 largest horizontal, not close, nearly straight, to I',, cm. long by S'/i — 4 

 mm. broad, blunt or bluntish, crenate or the largest bluntly toothed to 

 deeply lobed, the costula naked above, beneath sparingly provided with 

 buUate, acuminate, castaneous squamules; veins to 10 — 12 on a side, the 

 higher simple, the others forked or 3-furcate, sometimes sparingly 

 pinnate in the lobed segments. Texture coriaceous; surfaces naked. 

 Sori to ± 7 on a side, not on the higher veins, costular or the lower 

 somewhat divaricating; spurious indusium consisting of a moderately 

 large, flat or shallowly saucer-shaped, dark- or pale-brown scale encircling 

 the receptacle, when young cup-shaped with a truncate open mouth. — 

 Stipes unknown. 

 Sumatra. 



(44) A. okiana, ». A. v. JR., in Bull. Btz., 1916, XXIII, 4. 



Pinnae about 60 — 65 cm. long, acuminate, the rachis above 3-sulcate 

 and provided like the costae above with deciduous or persistent, acute, 

 yellowish or pale-ochraceous hairs, beneath very sparingly and minutely 

 pustulate, when young probably pale-furfuraceous and perhaps more or 

 less squamulose. Pinnulae sessile, approximate, spreading, linear, the 

 largest about 12 cm. long, 2 7-, cm. broad at the truncate base, deeply 

 pinnatipartite, narrowed gradually towards the subabruptly acuminate, 

 serrate or crenate-serrate apex, the costa deciduously pale-furfuraceous 

 beneath, the covering intermixed with (few?) scattered, deciduous, sub- 

 ulate, piloso-acuminate, ciliolate-serrulate, minute, whitish squamules. 

 Segments numerous, approximate, spreading, linear-oblong, falcate or 

 nearly straight, blunt or bluntish, the largest 3 — S'/j mm. broad, dilated 

 at the base, serrate-crenate, the higher crenations simple, the others 2- 

 crenate, the costula provided above with scattered, needle-like, often 

 curved, pale setae, scaly beneath with lanceolate, bullate, acuminate, 

 pale-ochraceous, minute squamules. Texture papyraceous, fragile when 

 dry ; surfaces naked ; under surface pale-green, apparently glaucous ; veins 

 to + 12 on a side, the higher often simple, the others forked. Sori 

 inframedial, in the forks or the veins, corresponding with an impression 

 on the upper side, to 9 on a side, not occupying the higher veins ; capsules 



