STUDIES IN THE COMPOSITAE. 281 
The species is rather rare in the herbaria. All Mr. Ryd- 
berg's citations for his A. microphylla belong to it, as also 
those distributed from the Laramie Plains, Wyoming (as 
A. dioica), by Mr. C. S. Sheldon. It is beautifully repre- 
sented in the Canadian Survey by n. 10907, East End Post, 
Cypress Hills, Assiniboia,and n.10906,from Sheep Mountain, 
Alberta. The male plant, at least in the herbaria, is more 
common than the female. 
A. ROSEA. A. dioica, var. rosea, Eaton, Bot. King Exp. 
186. A. parvifolia, var. rosea, Greene, p. 175 supra. A. parvi- 
folia, Nutt. in small part, but not of spec. char. Plant by 
no means small, often 12, sometimes 14 or 15 inches high, 
yet frequently only 6 or 8 inches: leaves comparatively 
small, of the thinnest, as to texture, only canescently tomen- 
tose, but permanently so on both faces, the quite gradually 
dilated upper portion acute; cauline long and narrow, acute 
or acuminate: heads small, closely compacted in a com- 
pound cymose rounded cluster: bracts of the involucre 
pluriserial, their basal part concealed by wool, the tips from 
broad and obtuse in the outer series to narrow and acute 
in the inner, all rose-red. 
Of this only the female plant is known to me; which is 
the more remarkable in view of the fact that no other north- 
Western Antennaria so abounds in every large herbarium. 
It is a dry-ground species of subalpine habitat, with either 
short or elongated slender dry and subligneous stolons; in 
this quite unlike the true A. parvifolia. From A. hyperborea 
it is more difficult to distinguish it, except by the looser in- 
florescence, longer heads, less woolly involucre, and fewer 
paler narrower bracts of the last named. I give the follow- 
ing rather copious list of localities for A. rosea. North Park, 
Colorado, Chas. S. Sheldon, n. 128; Yellowstone Park, Frank 
Tweedy, n.728; mountain meadows in Kootenai Co., Idaho, 
_ J.B. Leiberg, n. 646; Nez Perces Co., Idaho, Heller, n. 3441; 
Salmon River, British Columbia, Dawson (Can. Surv. n. 
