3. ALSOPHILA. 63 



rather sessile, close, linear, acuminate, the higher oblique, the lower 

 horizontal or deflexed, the largest 9 — 11 cm. long, 1'^ — 2'^ cm. broad 

 at the truncate base, deeply pinnatifld, nearly pinnate, the costa castaneo- 

 tomentose above, deciduously pale-furfuraceo-squamose beneath. Ultimate 

 segments linear or linear-oblong, straight or falcate, approximate, the 

 lower horizontal and not rarely free, the largest to 1 ' , cm. long by 3 

 mm. broad, blunt or bluntish, crenate, somewhat recurved at the edge, 

 the costula naked above, deciduously pale-furfuraceo-squamulose beneath; 

 veins to + 10 on a side, forked, sometimes 3-furcate, the higher simple. 

 Texture coriaceous; upper surface naked, lower provided with deciduous 

 gland-like, adpressed, short hairs on the veins. Sori costular, occupying 

 the 1 — 4 lower veins; receptacle encircled by a moderately large, orbicular, 

 erose, brownish scale. 

 Sumatra. 



(206) A. indrapiirae, ». A. v. R., in Bull. Btz., 191b, XX, 2. 



Trunk to 2 m. or more high. Stipes to 45 cm. or more long, fuscous 

 when dry, aculeate with short, acute, conical warts, deciduously scaly, 

 the scales long, subulate-lanceolate, fuscous, ciliate vdth deciduous, erected, 

 short, acute, dark-brown hairs. Fronds 3-pinnatifld, the main rachis 

 muricato-asperulous or subaculeate and deciduously scaly in the lower 

 part, ■ otherwise, like the secondary rachises, smooth or roughish, above 

 deciduously ferrugineo-villoso-tomentose, beneath when young very minutely 

 ochraceo-lanuginose. Pinnae subsessile, imbricating, subhorizontal, the 

 largest about 55 — 60 cm. long. Pinnulae numerous, approximate, sub- 

 sessile, deciduous apparently articulated at the base), lanceolate-linear, 

 shortly and somewhat abruptly acuminate, the higher oblique, the lower 

 horizontal, the largest about 9 cm. long by 2 cm. broad, deeply pinnatifld, 

 hardly narrowed at the subtruncate base; costae ferrugineo-villose above,, 

 when young very minutely ochraceo-lanuginose and sparingly lanceolato- 

 squamulose beneath. Ultimate segments linear-oblong, approximate or 

 somewhat remote, much spreading or nearly horizontal, straight or 

 somewhat falcate, blunt, entire or crenulate, the largest 1 cm. long by 

 2' J — 3 mm. broad, somewhat dilated at the base, the lower sometimes 

 subdistinct; costulae naked above, sparingly and minutely subbuUato- 

 squamulose beneath; veins to 8 — 10 on a side, forked, the higher simple. 

 Texture firm-herbaceous ; surfaces naked. Sori costular, occupying the 

 lower veins, to 6 on a side; receptacle encircled by a moderately large, 



