374 BOTANICAL GAZETTE [DECEMBER 
may occur on the eastern base of the Rockies, possibiy extend- 
ing into eastern Nebraska, as given in Britton & Brown’s Flora, 
a statement questioned by Dr. Greene. It seems probable that 
some confusion on this point has arisen by the distribution of a 
somewhat similar plant occurring in situations much like those 
in which C. Parryi occurs. This plant I think should stand asa 
species, and may be named as below. 
Chrysothamnus affinis, n. sp.—Scarcely shrubby, the persistent 
base hardly more than a much-branched woody caudex: the sea- 
son’sstems very numerous, simple, 1-2" high, yellowish, glabrate: 
leaves crowded, narrowly linear, acute, erect or spreading, dark 
green, nearly glabrous, 3-4™ long: inflorescence a crowded 
spicate thyrsus which at maturity distinctly surpasses the leaves : 
bracts glabrate, arachnoid-ciliate on the margins, somewhat 
thickened-coriaceous, about three in each row; the outer with an 
ovate base, contracted in a usually spreading acumination ; the 
inner linear-oblong, abruptly acuminate, shorter than the pappus: 
corolla tube slender, bearing only a few, minute, scattering clav- 
ellate hairs, shorter than the expanded, tubular throat which 1s 
cleft about one fourth its length: style appendages tardily but 
at length wholly exserted: akene linear-cylindric, about 6™ long. 
Allied to C. Howardi (Parry) Greene, but clearly distinct by its seat 
shrubby habit, its greenish glabrate aspect, and its crowded yellow inflor- 
escence which surpasses the leaves. C. Howardi has cinerous leaves 4” 
stems, a dirty whitish-yellow inflorescence, and the leaves overtop the com 
paratively few and large heads whose bracts are distinctly arachnoid. 
Excellent specimens were collected by J. H. Cowen, Jefferson, ae 
August 1896, and distributed as Bigelovia Howardi Gray. Typ ait 
University of Wyoming. . 
CHRYSOTHAMNUS AFFINIS attenuatus, 0. comb. (Bigelovia 
Howardi attenuata Jones, Proc. Cal. Acad. Sci. II. 5+ 691: 1695" 
The specimen of Mr. Jones’ type number, 591% 
vdi. ts 
approach C. affinis much more closely than it does C. Howd an 
more persistent stems and longer branchlets, its very 1ong 
nate bracts, and long exserted styles will readily distinguish : F 
CHRYSOTHAMNUS COLLINUS Greene, Pitt. 3° 24. ate ge 
distinct and clearly characterized species I think has not 
$ 
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