FERNS OF THE MALAY-ASIATIO REGION. 51 



is perhaps too near to C. caudata, the rachis being rougher, the costae 

 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 pinna? 



at the base, chestnut, spiny, scurfy, and scaly with dark, harsh, narrow 

 palese 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 ; son 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, furf uraceous ; pinnse 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 {Cyathea celebica v.A.v.R. in 

 Bull. Dept. Agr. Ind. Neer. 18 (1908) 2). 



Eachis beset with acute spines, furf uraceous ; frond ample, tripinnate, 

 subcoriaceous, glabrous, or minutely paleaceous beneath; pinnse stalked, 

 50 to CO 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; son many, covering the segments except at base and 

 apex, indusium thin and evanescent. 



Celebes. 



72. Cyathea pustulosa (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; pinnse up 



