1002 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



7. Artemisia bigelovii A. Gray, U. S. Rpt. Expl. Miss. Pacif. 4: 110. 



1857. 



Artemisia petrophila Woot. and Standi., Contrib. U. S. Natl. 

 Herbarium 16: 193. 1913. 



Apache, Navajo, and Coconino Counties, 5,000 to 7,000 feet, dry 

 mesas and slopes, sometimes with pinyon, August to October. Colo- 

 rado and Utah to Texas, New Mexico, and northern Arizona. 



A small, many-stemmed shrub. 



8. Artemisia frigida Willd., Sp. PL 3: 1838. 1804. 



Navajo and Coconino Counties, 6,000 to 7,000 feet, dry stony soil, 

 July to October. Canada and Alaska, south to Texas, New Mexico, 

 and northern Arizona; Siberia. 



Estafiata. An undershrub or almost herbaceous, often forming 

 mats, valuable as forage. 



9. Artemisia dracunculoides Pursh, Fl. Amer. Sept. 742. 1814. 



Apache County to Mohave County, south to the mountains of 

 Cochise, Santa Cruz, and Pima Counties, 3,300 to 9,000 feet, open 

 coniferous forests and chaparral, common, August to October. Mani- 

 toba to British Columbia, south to Texas, Arizona, and Baja Cali- 

 fornia. 



False-tarragon. Much of the Arizona material, in its small rather 

 long-peduncled heads (the peduncles up to 5 mm. long) approaches 

 var. dracunculina (S. Wats.) Blake (A. dracunculina S. Wats.), de- 

 scribed from Chihuahua. The type of that form, however, has rather 

 densely pilose stems and leaves, and the only Arizona specimen ex- 

 amined that completely agrees with it is one from Mount Lemmon, 

 Pima County, 6,000 feet {Harrison and Kearney 8051). 



10. Artemisia pacifica Nutt., Amer. Phil. Soc. Trans, ser. 2, 7: 



401. 1841. 



Artemisia camporum Rydb., North Amer. FL 34: 254. 1916. 



Hopi Indian Reservation (Navajo County) and Eaibab Plateau 

 (Coconino County), to the White Mountains (Apache County), 

 Prescott (Yavapai County), and Sierra Ancha (Gila County), 5,500 

 to 8,000 feet, open coniferous forest, July to October. South Dakota 

 to northwestern Canada, south to New Mexico and central Arizona. 



11. Artemisia filifolia Torr., Ann. Lye. N. Y. 2: 211. 1828. 

 Apache, Navajo, and Coconino Counties, 5,000 to 6,000 feet, loose 



sandy soil, August to November. Nebraska and Wyoming to Nevada, 

 south to Texas, northern Arizona, and northern Mexico. 

 Sand sagebrush. A small much-branched shrub. 



12. Artemisia tridentata Nutt., Amer. Phil. Soc. Trans, ser. 2, 7: 



398. 1841. 



Apache, Navajo, and Coconino Counties, 6,000 to 7,000 feet, plains, 

 mesas, and rocky slopes, in the open or with pinyon and juniper, 

 common, July to October. South Dakota to British Columbia, south 

 to New Mexico, northern Arizona, and Baja California. 



Big sagebrush occurs in nearly pure stands over large areas in 

 central Apache and Navajo Counties. Varies greatly in size according 

 to habitat, forming an extensive root system and reaching a height of 



