44 COPELAND. 



44. Cyathea oinops Hassk. 



Trunk reaching a height of 12 m, 12 to 15 cm thick; stipe 50 cm 

 long, rough, scaly at the base, elsewhere like the rachis, chestnut, clothed 

 with a dense, stellate, wine-colored tomentum, the secondary rachises 

 and costse bearing this tomentum and also shining, rust-colored Males; 

 frond 140 cm long, 70 cm broad, acute at both ends, tripinnate; pinnae 

 oblong, acute; pinnules linear-oblong, very acuminate; secondary pinnules 

 linear-oblong, acute, deeply crenate-serrate, bullate, rigid ; veinlets forked, 

 sometimes twice; sori in the forks, 12 to 16 to a segment, rust-brown, 

 large, finally confluent and covering all but the apex of the segment; 

 indusium very thin, soon bifid, then lacerate and vanishing. 



Java, at altitudes above 2,300 m. 



45. Cyathea javanica Blume. 



Trunk 10 m high; frond 190 cm long, 120 cm broad ; rachises rufescent, 

 glabrous or tomentose above, unarmed but the primary rachis rough with 

 minute bristles, secondary rachises paleaceous-tomentose beneath; pinna? 

 stalked; pinnules lanceolate, acuminate, deeply pinnatifid, costte bullate- 

 scaly beneath at base; segments linear-subfalcate, obtusely crenulate or 

 entire; veinlets about 8 on a side, mostly forked; sori few, the lowest 

 medial, the upper ones costular; indusium thin, evanescent except for 

 a saucer-shaped base. 



Java, Sumatra, commonest below 1,500 m. 



46. Cyathea schizochlamys Baker. 



Fronds ample, tripinnate, firm and subrigid, green on both sides ; rachis 

 unarmed, thinly tomentose and clothed with small, linear, acuminate 

 scales; pinna? 45 cm long, 12 to 15 cm broad, oblong-lanceolate, their 

 rachises densely clothed with small, ovate-lanceolate, cuspidate scales 

 which extend to the costa? and costules beneath; pinnules lanceolate, 

 sessile, 15 to 18 mm broad, narrowed from the middle to the apex, cut 

 to the costa into linear, entire or rarely crenulate secondary pinnules 

 about 2 mm broad, with a distinct space between them ; veinlets 9 or 10 

 on a side, forked at the base ; sori costular ; indusium membranous, fragile, 

 soon splitting to the base. 



Sumatra (Mount Singalan). 



47. Cyathea sumatrana Baker. 



Frond tripinnate; rachises not spiny, but densely clothed with fer- 

 ruginous tomentum and large, linear, acuminate, red-brown, membrana- 

 ceous scales; pinnae 45 to 60 cm long, 12 to 15 cm broad, texture firm, 

 both surfaces green ; pinnules lanceolate, sessile, 16 to 18 mm broad, cut 

 to the costa into ligulate, obtuse secondary pinnules 3 mm broad; veinlets 

 8 to 10 on a side, all but the uppermost once or twice forked; sori crowded. 



