FERNS OF THE MALAY-ASIATIC REGION. 
55 
wide, indusium thinly membranaceous. Near G. contaminans in ap- 
pearance. 
Borneo. 
80. Cyathea burbidgei (Baker) Copel. ( Alsophila burbidgei Baker in Journ. 
Bot. 17 (1879) 38). 
Eachises smooth and without scales, but those of the pinnae hairy; 
pinnules cut to a narrow wing, into ligulate, subentire, obtuse segments 
2 mm wide, costae strongly ciliate beneath ; veinlets 4 or 5 on a side, simple 
or forked; sori medial, indusium wanting. Allied to G. latebrosa, C. 
Oldhami and C. Wallacei. 
North Borneo. 
81. Cyathea albosetacea (Bedd.) Copel. ( Alsophila albosetacea Beddome, 
Suppl. (1876) 2). 
Main rachis purplish, muricate, and (in age) only slightly scaly; 
pinnae long-petioled, their rachises very scaly; pinnules with the one or 
two lowest segments free, elsewhere cut nearly to the costa; segments 
oblong, subfalcate, slightly crenate; costas 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 Gystopteris 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 G. 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; cost® 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 eostular 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; pinnae lanceolate, 60 to 75 
