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



Hall and Clements), but it has a different geographical distribution and 

 the writers believe it to be specifically distinct. The plants are readily 

 browsed by cattle, sheep, and goats. 



*13. Atriplex corrugata S. Wats., Bot. Gaz. 16: 345. 1891. 



Not known definitely to occur in Arizona but has been collected in 

 northwestern New Mexico, near the Arizona State line. 



14. Atriplex polycarpa (Torr.) S. Wats., Amer. Acad. Arts and Sci. 



Proc. 9: 117. 1874. 



Obione polycarpa Torr., U. S. Kpt. Expl. Miss. Pacif. 4: 130. 



1857. 



Maricopa, Pinal, Pima, Mohave, and Yuma Counties, 2,500 feet or 

 lower, very abundant on sandy-gravelly plains and mesas. Arizona 

 to Nevada, southern California, and northwestern Mexico. 



Cattle-spinach, desert saltbush, allscale, commonly known in Ari- 

 zona by the confusing names "sage" and " sagebrush." In the 

 deserts of southwestern Arizona it covers vast areas of moderately 

 saline or nonsaline soil, in pure stands or associated with creosotebush 

 (Larrea), the bushes often symmetrically rounded and evenly spaced. 

 It is by far the most important native forage plant of that region, 

 which, however, is too arid to support many cattle. 



15. Atriplex hymenelytra (Torr.) S. Wats., Amer. Acad. Arts and Sci. 



Proc. 9: 119. 1874. 



Obione hymenelytra Torr., U. S. Rpt. Expl. Miss. Pacif. 4: 129- 



1857. 



Near Mead Lake, Mohave County (Clover 4291), and in Yuma 

 County, below 1 ,000 feet, in dry sandy or stony soil. Arizona, Nevada, 

 and southeastern California. 



Desertholly. The silvery, evergreen leaves are gathered for Christ- 

 mas decorations and winter bouquets, and are sometimes dyed or 

 gilded. 



16. Atriplex lentiformis (Torr.) S. Wats., Amer. Acad. Arts and Sci. 



Proc. 9: 118. 1874. 



Obione lentiformis Torr. in Sitgreaves, Zufii and Colo. Rpt. 169. 

 1853. 



Coconino and Mohave Counties, south to Pima and Yuma Counties, 

 4,200 feet or (usually) lower, in moist or dry saline soil. Southern 

 Utah and Nevada to Sonora and California. 



Quailbrush, lenscale, sometimes known in Arizona as white-thistle. 

 This is the largest and showiest saltbush in Arizona, reaching a height 

 of 10 feet where the watertable is high. It is especially abundant in 

 the low western and southwestern parts of the State. Cattle browse 

 the plants and the forage is palatable. In addition to the common 

 typical form, with obtusely angled branches, there occurs an apparently 

 rare form with acutely angled branches and relatively narrow leaves, 

 subsp. griffithsii (Standi.) Hall and Clements (A. griffithsii Standi.). 

 The type of A. griffithsii was collected at Willcox, Cochise County 

 (Griffiths 1895). 



