RyDBERG: Rocky MountTAIN FLORA 451 
distinct is questionable, but they are evidently different from 
A. canadensis, and Besser, regarding them as such, referred them, 
first to A. desertorum and later to A. commutata. In the original 
publication,* Dr. Watson compares A. Forwoodii with A. discolor, 
to which it’ has no close relationship. It is the same as A. deser- 
torum Hookeriana Besser. t 
Artemisia kansana Britton and A. stenoloba Rydb. are given 
as synonyms of A. Wrightii. The description of the last in 
the New Manual is mostly copied from Dr. Gray, who perhaps in- 
cluded A. kansana, but the type, Wright 1279, is not the same as 
A. kansana Britton. The plant Professor Nelson had in mind 
is evidently A. kansana and not the true A. Wrightii, judging 
_ from the key and from the association with A. coloradensis Oster- 
hout. The true Artemisia Wrightii has an involucre only slightly 
tomentose and the leaves glabrate above and is very close to A. 
Bakeri Greene, differing mainly in the erect instead of nodding 
heads. If Artemisia Bakeri should be reduced to a variety of 
A. mexicana, A. Wrightii should also. A. stenoloba Rydberg was 
never described, but the specimens so named in manuscript 
belong to kansana. There is however, an older name for this 
species, viz., A. Carruthii Wood, as pointed out by Mr. Mackenzie. 
Artemisia rhizomata A. Nels., A. pudica Rydb., A. pabuiaris 
(A. Nels.) Rydb., A. Purshiana Besser, and “‘probably”’ A. can- 
dicans and A. floccosa Rydb. are reduced to synonyms of A. 
gnaphalodes Nutt. If A. rhizomata and A. pabularis (originally 
described as a variety by Nelson) are reduced to synonymy I 
shall enter no protest. I do not know what the first really is. One 
specimen in the Columbia herbarium bears the type number, but 
it does not agree with the original description and the label evi- 
dently has been interchanged. Some of the specimens distributed 
later under that name belong to the form of A. gnaphalodes common 
in the Rocky Mountain region. The form growing in Wisconsin, 
the type state of A. gnaphalodes, looks quite different, although it 
is almost impossible to characterize the differences in words. 
Artemisia pabularis is a peculiar plant, in some respects inter- 
mediate between A. gnaphalodes and A. microcephala Wooton, 
*Proc. Am. Acad. 25: 133. 1890. 
THook. Fl. Bor.~Am. 1: 325. 1833. 
