FERNS OF THE MALAY-ASIATIC REGION. 
51 
is perhaps too near to 0. caudata, the rachis being rougher, the costse 
more glabrous, and the indusium constant and persistent. 
Luzon (Province of La Laguna, alt. 700 to 1,000 m). 
69. Cyathea halconensis Christ in Philip. Journ. Sci. Bot. 3 (1908) 270. 
Trunk 3 m high; stipe short or almost none because of reduced pinnae 
at the base, chestnut, spiny, scurfy, and scaly with dark, harsh, narrow 
paleae 1 cm long ; rachis shading upward to a rather light reddish-brown, 
there almost glabrous and the spines reduced to sparse, minute prickles; 
frond 1 m or more long, hardly half as wide ; pinnae 30 cm long, 13 cm 
wide, sessile, acuminate, rachises smooth and almost glabrous, light- 
brown ; pinnules up to 7 cm long and 22 mm wide, sessile or subsessile, 
cut near the base to the costa and the lowest secondary pinnules sessile 
but usually not adnate, costa hairy above, beneath, like the costules and 
veinlets, black and glabrous except for a very few lanceolate scales; seg- 
ments 3 mm wide, obtuse or subacute, serrulate, glabrous, membranaceous, 
very dark above, pale and almost glaucous beneath; veinlets 7 to 10 on 
a side, forked near the base ; sori in the forks, 1 mm wide, indusium thin, 
shining-brown, splitting irregularly into large pieces, persistent. 
Mindoro, alt. 1,600 to 2,000 m. 
70. Cyathea celebica Blume. 
Frond silky-glaucous beneath, membranaceous; rachis purplish, muri- 
cate, furfuraceous ; pinnae more than 30 cm long; pinnules linear- 
lanceolate, acuminate; secondary pinnules linear-subfalcate, obtuse, 
crenulate at the apex, truncate and sessile at base; veinlets 10 on a side, 
forked at the base. 
Celebes, Ternate, Batjan. 
71. Cyathea teysmannii Copel nomen novum ( Gyatliea celebica v.A.v.R. in 
Bull. Dept. Agr. Ind. Neer. 18 (1908) 2). 
Rachis beset with acute spines, furfuraceous; frond ample, tripinnate, 
subeoriaceous, glabrous, or minutely paleaceous beneath; pinnae stalked, 
50 to 60 cm long, about 20 cm wide; pinnules sessile or the lowest 
stalked, about 2 cm wide, cut at the base to the costa ; secondary pinnules 
subfalcate, obtuse, crenate, the lowest ones stalked and lobed toward the 
base, the lobes small, the lowest ones free; lowest veinlets two or three 
times forked and sterile, middle ones once forked and fertile, upper ones 
simple and sterile; sori many, covering the segments except at base and 
apex, indusium thin and evanescent. 
Celebes. 
72. Cyathea p ustu I osa (Christ) Copel. ( Alsophila pustulosa Christ in Bull. 
Herb. Boiss. II 1 (1901) 1019). 
Trunk 3 to 4 m high; stipe stout, yellowish, clothed at the base with 
thin, whitish, subulate scales 1.5 cm long, and, like the rachis, rough 
with dense, minute prickles; frond 150 cm long, tripinnate; pinnae up 
