BOTANICAL OBSERVATIONS IN WESTERN WYOMING. 5 
pedatifida Nutt., Phlox longifolia Nutt., Phlox canescens Torr. & 
Gray, Castilleia parviflora Bong., Pentstemon humilis Nutt., and 
Gilia pungens Benth. i“ 
On reaching the higher ground forming the eastern rim of the 
Green River basin, which leads by an easy pass, at an average ele- 
vation of seven thousand feet above the sea level, from the Pacific 
to the Atlantic slope, the prevalent desert growth gives place to 
a vegetation partaking of a sub-alpine character. This district 
comprises the botanical localities designated by Nuttall as “dry 
and lofty hills in the central range of the Rocky Mountains.” 
Here accordingly we again come within the range of these early 
discoveries in re-collecting such choice plants as Draba Alpina L., 
var. densifolia, Lepidium montanum Nutt., Trifolium Andinwm 
Nutt., Trifolium gymnocarpon Nutt., Astragalus campestris Gray, 
Oxytropis lagopus Nutt., and Phlox bryoides Nutt. 
Here also we meet for the first time, probably near its south- 
eastern limits, the interesting Lewisia rediviva Pursh. This 
becomes much more abundant farther north in the Wind River 
valley, and we were thus afforded an opportunity to observe this 
plant through its flowering and fruiting stages, extending from 
the latter part of June to the middle of J uly. After this latter 
period its matured capsules are detached and blown away, leaving 
no trace of the plant exposed to view, till the following sprin 
develops the rosette of radical leayes, by which the Indians are 
guided in procuring their supplies of this palatable and nutritious 
root. Recent attempts have been made to introduce this showy 
plant into our gardens, where it would prove quite an acquisition. 
Shrubbery is here represented mainly by Rosacee, including 
Amelanchier Canadensis Torr. & Gray, Potentilla fruticosa L., 
Purshii tridentata DC., Ribes cereum Dougl., but we look in vain, 
in apparently favorable localities, for the forms so well known in 
the mountain range farther south in Colorado of Ribes deliciosus 
Torr., Oercocarpus parvifulius Nutt., or Jamesia Americana Torr. 
& Gray. 
The scanty pine growth includes chiefly Pinus flewilis James, 
with an occasional clump of Abies Douglasii Lindl, and Juniperus 
Virginiana L. 
The southeastern spurs of the Wind River range present a suc- 
cession of steep, grassy slopes agreeably interspersed with pine- 
clad ridges. Through numberless channels the mountain streams 
(11=12 
