362 PHANEROGAMOUS PLANTS. 



51. ARTEMISIA, Linn, 



1. Artemisia dracunculoides, Pursli, Torr. & Gray. 



Hab. California, on the Sacramento and near San Francisco. 

 Farther west than before known. This, with A. glanca, should per- 

 haps be joined to A. dracunculus. 



2. Artemisia Canadensis, Michx., Torr. & Qray. 



Hab. Okanagan and Nisqually, Washington Territory; the silky- 

 leaved form. 



3. Artemisia cana, Pursh? 



Hab. Between Spipen River and the north fork of the Columbia 

 River, Washington Territory. — With only vestiges of flowers, and 

 therefore of uncertain determination. 



4. Artemisia tridentata, Nutt. 



Hab. On the Walla-Walla, &c, Oregon. The principal '-'sage- 

 bush" of the interior plains. 



5. Artemisia trifida, Nutt 



Hab. On the north fork of the Columbia River, the plains east of 

 the Cascade Mountains, &c. 



6. Artemisia Ludoviciana, Nutt. 



Hab. Washington Territory, between Spokane and Colville; a 

 variety with laciniated leaves. California, on the Sacramento and 

 near San Francisco ; the varieties latiloba and gnaphalod.es. Walla- 

 Walla River, &c, Oregon ; a variety of this polymorphous species with 

 pinnatifid leaves and narrow segments, probably A. Hooker iana, Besser. 



