176 BOTANY. 
cone is clearly defined, but in some of my Southern forms of what I can 
only consider as multiradiata that it is also slightly present—. e., the style 
branches are not absolutely truncate. Whilst in the main I can recognize 
marked differences between these two species, the wide range of variation 
in the rays, size, branching, etc., makes me regard the differences as in the 
highest sense simply one of degree. It is noteworthy, too, that these two 
forms appear to come nearer to each other’as we go southward. 
ARTEMISIA DRACUNCULOIDES, Pursh.—Twin Lakes, Colorade (530); 
also obtained from Arizona and Utah. 
ARTEMISIA BOREALIS, Pallas.—South Park, Colorado (535, 536). Alpine. - 
ARTEMISIA CANADENSIS, Michx.—Arizona; also from Colorado (532). 
ARTEMISIA TRIDENTATA; Nutt.—Twin Lakes, Colorado (431); also from 
the New Mexican deserts, Loew. . 
ARTEMISIA DISCOLOR, Dougl—Southern Arizona (753). 
Artemisia Lupoviciana, Nutt.—Colorado (529) Arizona, by the earlier 
explorations of the Survey, and later by Loew from Mount Turnbull. The 
latter specimen looking toward var. Mexicana, Gray, having the upper leaves 
trifid and the margins revolnte, and the entire plant (especially younger 
specimens) tomentose-canescent. From the San Luis Valley, Colorado, 
we have, in 1873 (539), a much narrower-leaved form (tenuifolia, Gray), 
which Dr. Gray intimates may be a distinct species. 
Var. Dovetasiana, D. C. Eaton, is from Southern Arizona (717) and 
from Utah. Varieties latiloba, Nutt., and latifolia, T. & G., also from Utah. 
Artemisia FricipA, Willd—From plains between Denver, Colo., and 
the foot-hills (469). To this we frequently find Aphyllon fasciculatum, T. 
& G., attached; parasitic attachments uniting the rootlets of the two. 
ARTEMISIA SCOPULORUM, Gray.—South Park, Colorado (430). Alpine. 
Arnica corpirotiA, Hook.—Clear Creek, Colorado (570). 
Arnica ALpIna, Lestad. (Arnica angustifolia, Vahl.)—Clear Creek, 
Colorado (569). 
ARNICA LATIFOLIA, Bongard.—Utah. 
Arnica Lonoirouia, D. C. Eaton —Utah. 
Arnica Fouiosa, Nutt—More than a foot high, erect, simple, tomen- 
tose or glandular-pubescent; lower leaves petioled ; upper ones sessile, 
