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372 BOTANICAL GAZETTE | DECEMBER 
frigidus so long as 1 am unable to say what is typical of the latter. Ever 
since its publication (E7ythea 3: 112. 1895), based upon specimens (one of 
which I have) collected at Laramie by Dr. Greene, I have collected freely in 
this genus. Though in the center of distribution for C. /rigidus, and in spite 
of the large series representing it, I have never secured duplicates of the 
specimens distributed by Dr. Greene, nor any quite typical, judged by the 
description. Assuming that the plant, so common on the Laramie plains, 
of which there seem to be several forms, must stand as C. frigidus, the 
preceding may at least be ranked as a variety, no matter what may be typical 
of the other. Nor may this be connected with C. Plattensis. Some forms of 
that seem to connect very closely with C. /rigzdus, but typical specimens of 
the two are really widely different. C. Plattensis one at once associates 
with C. sfeciosus on general appearance; not so with C. frigidus and the 
variety now proposed. 
Collected on the banks of Hutton lakes, in rather sandy, but more or less 
alkali impregnated soil, September 6, 1898, no. 5300. 
: dm 
Chrysothamnus pallidus, n. sp.—A small tufted shrub, 2-5 
high, with a close felted tomentum which persists even on the 
old stems: stems rather scraggy branched, somewhat rigid, the 
season’s twigs very short: leaves mostly confined to the season s 
growth, the tomentum looser than on the stems, ascending, irreg- 
ularly spreading or reflexed, linear, acute, 2-3™ long; shorter 
and crowded at the base of the inflorescence: heads small, in 
thyrsoid panicles or somewhat corymbosely clustered cymes; 
involucre short, sub-campanulate, its bracts short, oblong, sub- 
acute, ciliate-pubescent especially on the margins, about three 
in each row: tube of the corolla closely covered with short, 
: € 
clavellate hairs, the throat longer than the tube and cleft as 
third its length: style divisions exserted, the stigmatic asa 
about as long as the appendages: akenes densely pubescen 
about equaling the corolla tube. 
Allied to C. frigidus but distinguished by its more rigid, scrag 
which are leafy only on the branchlets ; by the close, persistent, 
ment; by the shorter bracts, florets, akenes ; by the exserted sty 
and the denser hairiness of the corolla tube. ie. Sep- 
Seemingly a rare plant; collected on an alkaline flat near aint a 
tember 24, 1898, no. 5347. Also on Bacon creek, August 15, 1894, B® 
dm hj xh, 
Chrysothamnus Wyomingensis, 1. sp.—Tufted, 2-4 ae 
bushy-branched from the base, the branches with asce? ing 
gy branches 
white indu- 
le divisions 
