FERNS OF THE MALAY-ASIATIC REGION. 55 



wide, indusium thinly membranaceous. Near C. contaminant in ap- 

 pearance. 

 Borneo. 



80. Cyathea burbidgei (Baker) Copel. (Alsophila burbidgei Baker in Journ. 

 Bot. 17 (1879) 38). 



Kachises smooth and without scales, but those of the pinnas hairy; 

 pinnules cut to a narrow wing, into ligulate, subentire, obtuse segments 

 2 mm wide, costa? strongly ciliate beneath ; veinlets 4 or 5 on a side, simple 

 or forked; sori medial, indusium wanting. Allied to C. latebrosa, C. 

 Oldhami and C. Wallacei. 



North Borneo. 



81. Cyathea albosetacea (Bedd.) Copel. {Alsophila albosetacea Beddoine, 

 Suppl. (1876) 2). 



Main rachis purplish, muricate, and (in age) only slightly scaly; 

 pinna? long-petioled, their rachises very scaly; pinnules with the one or 

 two lowest segments free, elsewhere cut nearly to the costa; segments 

 oblong, subf alcate, slightly crenate ; costa? sparingly clothed beneath with 

 long, white, setaceous hairs, which are also present in a less degree on 

 the costa and costules above, costules beneath furnished with deciduous, 

 bullate scales which often have a hyaline, setaceous point at the apex 

 (resembling the indusium of Ctjstopteris fragilis) ; veinlets all forked near 

 the base, one branch often and both very rarely again forked ; sori copious, 

 indusium wanting. The position of this plant is uncertain because of 

 incomplete diagnosis; it is reduced by Diels to C. latebrosa. 



Nicobar Islands. 



82. Cyathea chinensis Copel. in Philip. Journ. Sci. Bot. 3 (1908) 355. 

 Trunk 6 m high; rachis almost glabrous, not prickly; pinna of type 



specimen 42 cm long, 13 cm wide, sessile, acuminate, its rachis stram- 

 ineous, clothed above with purplish-brown hairs and beneath with sparse 

 hyaline hairs ; costa? similarly pubescent, but more densely beneath, and 

 toward the tip with a few irregular squamules; pinnules sessile, 7 cm 

 long, 14 mm wide, caudate with the apex serrate, cut almost to the costa ; 

 segments obtuse, subfalcate, 3 mm wide, serrulate, herbaceous, green on 

 both sides, but somewhat paler beneath, the lamina glabrous but the 

 costule bearing some hairs and squamules beneath; veinlets 7 to 9 on 

 a side, mostly forked, inconspicuous; sori costular at the bases of the 

 segments, small, each subtended by one or two brown scales. 

 China (Yunnan, in the Szemao forest, alt. 1,800 m). 



83. Cyathea trichodesma (Scort.) Copel. (Alsophila trichodesma Schort. ex 

 Bedd. in Journ. Bot. 25 (1887) 321). 



Trunk of moderate size, slender; stipes scaly at the base; frond 120 

 to 180 cm long, bipinnate; rachis rough above, clothed with appressed, 

 spreading, semi- viscous, copious, jointed hairs; pinna? lanceolate, 60 to 75 



