14 BULLETIN 1345, U. S. DEPARTMENT OF AGRICULTURE 
In its area of distribution in Arizona, A. polycarpa produces by 
far the greater part of the forage available for livestock. What 
is still more surprising, these shrubs give to a nearly grassless 
desert a grazing capacity nearly as hight as that of the grasslands 
farther north and east. 
ATRIPLEX POWELLI S. Wats. 
Atriplex powellit is a branched annual, 2 feet high or less, with 
numerous oval to almost circular leaves having short petioles or 
none. The stems and leaves are mealy white. “Its fruit, in small 
crowded clusters along the leafy stems, consists of small seed pods, 
with thickish, coarsely toothed wings, "scarcely one-sixteenth of an 
inch wide. 
The species is distributed rather widely in the alkaline soils of 
southwestern South Dakota, Montana, Wyoming, Utah, western 
Colorado, northern Arizona, and northwestern New Mexico. 
Department sample 8357 (G) consists of material in bloom, col- 
lected on the plains near Winslow, ‘Ariz., June, 1906. Department 
sample 10923 (G) was collected in gumbo soil at Fort Pierre, 
S. Dak., September 4, 1914. 
Composition (water-free basis) 
Sample Moisture =c 
Ash Ether Crude - tees oe Protein Pento- 
extract | fiber | ee sans 
| | 
| Percent | Percent | Percent | Percent | Percent | Percent | Per cent 
Department 8357 (G) ___-_---_-- (AP 29. 2 1.9 ES 37. 6 15. 6 2 
Department 10923 (G)_______--_- | 4.8 24.9 135} 25. 4 35. 8 | 1Z. 4 19.3 
Evidently A. powellii is not a very important stock food. It is 
used by livestock only when forced to it by lack of something better 
or by a general scarcity of feed. 
ATRIPLEX ROSEA L.© 
Atriplex rosea is an erect, vigorously growing, branching, leafy 
annual, gray-green or sometimes a little yellowish, and mealy on all 
young parts and on the lower sides of even the older leaves. The 
leaves are 2 inches long or less, about half as broad, oval to oblong 
in outline, with a few coarse teeth on each side, acute at the top, 
and tapering to the base. Although an introduction from Europe, 
this species is widely distributed in cultivated fields in the Eastern 
States and on many waste lands in the cooler parts of the range 
country of the Western States. 
Department sample 8883 (G) consists of material in early fruit, 
collected at Dalles, Oreg., August 22, 1907. Department sample 
7206 (W) consists ‘of material in full flower, including more than 
half of the stems and’ leaves of 3-foot plants, collected at Craig, 
Colo., August 5, 1914. 
114. philonitra A. Nelson; A. nelsoni M. E. Jones. 
124, spatiosa A. Nelson. 
