10 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 plants as Stanleya viridiflora Nutt., Oxytropis campestris 
L., var.? (No. 88), Aplopappus multicaulis Nutt., Tanacetum capt- 
tatum 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 wva-urst, and occasional patches 
of Berberis Aquifolium. Still there is a characteristic absence of 
many forms such as one would naturally look for in such local- 
ities, neither scrub oak, Rubus nor Symphoricarpus being here 
represented. Very common and attractive over all this district 
are the bright, showy flowers of a species of Lupinus (No. 54) 
allied to ZL. sericeus Ph.? but difficult to refer t6 any described 
species; here also Hedysarum boreale Nutt. is conspicuous, with 
its slender spikes of nodding pink flowers, occasionally inclining 
to a dull pinkish-white. On the crests of the dividing ridge at- 
taining an elevation of nine thousand feet there are extensive 
exposures of an arenaceous limestone, presenting tabled summits 
and perpendicular mural faces, with irregular broken talus at their 
bases. These localities offer not only very attractive points of 
view of the adjoining country, but afford a rare field for the bota- 
nist. Here in rock crevices was found the charming dwarf colum- 
bine, which, in compliment to the enterprising commander of the 
expedition, and its first actual discoverer, I have named Aquilegia 
Jonesii, n. sp. (see appendix, No.3). This species, which is most 
nearly allied to A. vulgaris L.,is sufficiently distinguished by its 
dwarf size and close czspitose habit, as well as other well marked | 
characters indicated in the description referred to. It would no 
doubt prove highly ornamental in cultivation, but unfortunately at 
the period of our collection (in July) the fruit was just maturing, 
(104) 
