Ferns of British India and Ceylon. 95 
being present, but very sparse ; the difference between the two is 
only a question of the tomentum, and both may well be varieties of 
farinosa. 
Khasya, 4,000 feet, plentiful on limestone ; Sikkim, 5,000 feet ] 
Gurwhal, 2,000-4,000 feet ; Dalhousie. 
12. Cheilanthes argentea. {Kunze) 
3-6 inches long, thick, dark brown, 
polished, clothed at the very base with 
linear scales ; fronds 3-4 inches long 
by 2 inches broad, triangular or deltoid, 
tripinnatifid, lowest pinnae much the 
largest but not cut down to the rachis, 
tripinnatifid ; rachis and costa polished 
like the stipe, upper surface naked, 
green, lower covered with white powder; 
involucres crenate or fimbriate. Kunze. 
LintKBa, 1850,/. 242. Hook. Syn. Fil. 
p. 142. Bedd. F. B. I. t 143. (The 
lowest pair of pinnae is rarely almost 
quite free, the decurrent wing on the 
rachis from the next pair being very 
narrow; the pinnae are generally broadly 
decurrent, so that the frond is not cat 
down nearly to the rachis.) 
Birma j Khasya, 3,000-5,000 feet. 
(Also in Siberia, Japan, and China.) 
Stipes densely tufted, 
I 
CHEILANTHES ARGENTEA 
{Kunze.) 
GENUS XXV.— ONYCHIUM. {Kaulf.) 
{Onychion, a Httle nail; resemblance to the fertile segments of 
the frond.) 
Sori placed upon a continuous linear receptacle, which connects 
the apices of several veins ; indusium parallel with the margin of the 
segments, linear, opposite, pressed down over the sori, the edge 
