104 BOTANICAL OBSERVATIONS IN WESTERN WYOMING. 
the scenery and vegetation became much more diversified; and 
rounded slopes of disintegrated metamorphic rocks, sharp crests 
of upheaved strata, and extensive exposures of the brick-red Tri- 
assic formation, present in their varied exposures all the condi- — 
tions for a varied flora. We accordingly here meet with such 
choice — as Stanleya viridiflora Nutt., Oxytropis campestris 
L., var.? (No. 88), Aplopappus multicaulis Nutt., Tanacetum capi- 
iaku Nutt. ; 
Farther up on the mountain slopes the increased elevation is 
evidenced by greater freshness of vegetation, the dull brown of 
the lowlands giving place to a rich soft verdure. Constant run- 
ning streams, however, are still rare, as the altitude is not suffi- 
cient to afford heavy deposits of winter snow to keep up a supply 
of water through the dry summer months. As we again encounter 
pine woods composed mainly of Abies Douglasii and Pinus flexilis, — 
the associated undergrowth is again brought to view in thick, 
matted growths of Arctostaphylos uva-ursi, and occasional patches 
of Berberis Aquifolium. Still there is a characteristic absence of 
many forms such as one would naturally look for in such ] 
ities, neither scrub oak, Rubus nor Symphoricarpus being here 
represented. Very common and attractive over all this dis 
are the bright, showy flowers of a species of Lupinus (No. 
allied to L. sericeus Ph.? but difficult to refer to any descri 
species; here also Hedysarum boreale Nutt. is conspicuous, W 
its slender spikes of nodding pink flowers, occasionally inclin 
to a dull pinkish-white. On the crests of the dividing ridge 
taining an elevation of nine thousand feet there are exten 
exposures of an arenaceous limestone, presenting tabled sum 
and perpendicular mural faces, with irregular broken talus at 
es. These localities offer not only very attractive poi 
view of thé adjoining country, but afford a rare field for the bot 
nist. Here in rock crevices was found the charming dwarf colun 
_ bine, which, in compliment to the enterprising commander of 
ce expedition, and its first actual discov erer, I have named Aqu 
Jonesii, n. sp. (see appendix, No. 3). This species, which ist n 
- nearly allied to A. vulgaris L., is sufficiently distinguished 
_ dwarf size and Close cæspitose habit, as well as other well m 
characters indicated in the description referred to. It w 
— doubt prove highly ornamental in cultivation, but infora 
the perio of our collection (in July) the fruit was aed 
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