48 2. HEMITELIA. § 2. AMPHICOSMIA. 



(4) fl. !^uitiatrsitna, v. A. ». K. ,• Cyathea AlderwereUii, Copel.] 

 in.Philipp. Journ., IV^, 50. 



Fronds 3-pinnatifld, sub-3-pinnate ; main and secondary rachises fuscous, 

 asperous to muricate with numerous slrort, blunt or sharp, dark-tipped 

 warts, densely dark-tomentose above, deciduously ferrugineo-furfuraceous 

 beneath, the pubescence intermixed with many more or less scattered, 

 deciduous, hnear-subulate, spreading scales, the main rachis finally foughish 

 beneath by the persistent bases of the covering. Pinnae ± 55 cm. 

 long, stalked. Pinnulae short-stalked, linear-lanceolate, 8 — 12 cm. long, 

 ± 2 cm. broad, shortly acuminate, deeply pinnatifid below the lobed apex, 

 pinnate at the base. Ultimate segments linear-oblong, + 2 '/j mm. broad, 

 subacute, subascending, rather falcate and crenate-dentate, the lower 

 ones free, horizontal. Texture chartaceous, fragile when dry ; colour dark 

 above, paler beneath; surfaces naked; costae (tertiary rachises) piloso- 

 tomentose above; costae and costulae densely clothed beneath with pale 

 or brown, lanceolate or ovate scales and long, crisped, woolly, ferrugineous 

 hairs; veins + 6 — 12 on a side, once or twice forked, the higher only 

 simple. Sori 1 — 4 on a side, ocupying the lower veins, subcostular, 

 densely mixed with, and nearly hidden under, the costular clothing, 

 subtended by a very minute, brown scale on the inner side. 



Sumatra. 



(4ffl) II. cauflipinniila, r. A. ». n., in Bull. Btz., 1912, VII, 16. 

 . Fronds 3-pinnatifid ; main and secondary rachises fuscous, smooth or 

 somewhat roughish with very riiinute warts, naked above, deciduously 

 ferrugineo-tomentose beneath. Pinnae probably above 35 — 40 cm. long, 

 sessile or subsessile, or the lower stalked. Pinnulae rather sessile, linear- 

 lanceolate, + 8 cm. long, ± r/^— P/^ mm. broad at the base, rather 

 suddenly subcaudate-acuminate, deeply pinnatifid, the acumen entire or 

 subcrenate. Ultimate segments hnear-oblong, ± 2'/2 mm. broad, blunt, 

 subfalcate, entire or subcrenate, the lower not free, spreading. Texture 

 chartaceous, fragile when dry; colour beneath paler than above; surfaces 

 naked ; costae naked above, distinctly but not densely clothed beneath with 

 pale or brown flat scales and ferrugineous hairs ; costulae naked above, hardly 

 scaly beneath ; veins 6 — 9 on a side, the lower and central forked, the higher 

 simple. Soji subcostular, 4 — 8 on a side, not occupying the higher veins, 

 subtended by a small, but well-developed, semiorbicular indusium. 

 Sumatra. 



