2. HEMITELIA. § 2. AMPHICOSMIA. 49 



(ib) H. barisauiea, ». A. v. n., in Bull. Btz., 1915, XX, 17. 



Trunk slender, about 3 m. high. Stipes 30 cm. more or less long, 

 fuscous, minutely aculeate, and deciduously furfuraceous and scaly, the 

 scales narrowly subulate, fuscous, somewhat crisped, ciliate with scattered, 

 deciduous, short, erected, acute, dark-brown hairs. Fronds to about 3 m. 

 long and '/^ as broad, 3-pinnatifid, the main rachis muriculate or aculeolate 

 and scaly at least towards the base, otherwise smooth or roughish, and 

 deciduously ferrugineo-tomentose and squamulose. Pinnae short-stalked, 

 the lower very remote, deflexed and reduced, the largest to 75 cm. long, 

 about 20 cm. broad at the middle, the rachis at length often naked above, 

 beneath ferrugineo-tomentose and deciduously squamulose, as are the 

 costae. Pinnulae subsessile, numerous, somewhat remote, horizontal or 

 nearly so, often subfalcate (upcurved or decurved), the largest lanceolate- 

 elongate, acuminate, the acumen crenulate to toothed, the edge deeply 

 incised, the base truncate or subtruncate, 2% — 2^/^ cm. broad. Ultimate 

 segments linear-oblong, blunt or bluntish, much spreading, approximate 

 or somewhat remote, to 1 '/j cm. long by 4 mm. broad, entire or crenulate, 

 the lowest subdistinct and a little more remote; costulae naked above, 

 beneath sparingly provided with lanceolate, subbuUate, acuminate, brown 

 scales, slightly hairy towards the base; veins to about 10 on a side, 

 intermixed with numerous spurious veinlets when seen towards the light, 

 forked, the higher simple, the lower not rarely 3-furcate. Texture firm- 

 papyraceous ; surfaces naked. Sori remote, occupying the 4 — 6 lower veins, 

 the higher costular, the lower somewhat divaricating; indusium distinct, 

 persistent. 



Sumatra. 



(4c) H. conflucns, ». A. v. R., in Bull. Btz., 1914, XVI, 14. 

 Stipes + 55 cm. long, more or less deciduously villoso-tomentose, 

 sparingly muriculate in the upper part, acutely spinulose and scaly in 

 the lower part, the scales dirty-brown, linear-subulate, partly entire, 

 partly erose. Fronds ± 70 cm. broad, sub-3-pinnate, the rachises more 

 or less deciduously villoso-tomentose, the hairs crisped, ferrugineous, 

 intermixed with scattered scales similar to those of the stipe but smaller. 

 Pinnae spreading, + 10 cm. broad above the base, sessile,- close, rather 

 abruptly acuminate ; lower pinnae rather remote, shorter, stalked. Pinnulae 

 horizontal or spreading, linear, + 1 cm', broad, bluntish, deeply pinnatifid, 

 pinnate at the base, the lower shorter. Segments linear-oblong, approximate, 

 Feens and Fern Allies. 4 



