spine-like bracts in the flower clusters.
In Utah, rough pigweed was rated as having fair palatability for cattle
and horses, and good palatability for sheep .
In Minnesota, rough pigweed was as palatable to sheep as oats (Avena
- 7. Dittberner, Phillip L.; Olson, Michael R. 1983. The plant information network (PIN) data base: Colorado, Montana, North Dakota, Utah, and Wyoming. FWS/OBS-83/86. Washington, DC: U.S. Department of the Interior, Fish and Wildlife Service. 786 p. 
- 25. Marten, G. C.; Andersen, R. N. 1975. Forage nutritive value and palatability of 12 common annual weeds. Crop Science. 15: 821-827. 
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