Rvdberg : Rocky Mountain flora 4ol 



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. f 



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 127Q, 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. pabularis 

 (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 Woo ton, 



*Proc. Am. Acad. 25: 133. 1890. 

 tHook. Fl. Bor.-Am. 1: 325. 1833. 



