Asclepias uncialis is a diminutive milkweed occurring in small colonies scattered along the eastern edge of the

southern Rocky Mountains. Occurrences are distributed in a westward trending arc from northeastern Colorado to

southeastern Arizona. Twenty extant occurrences within USDA Forest Service (USFS) Region 2 include one from the

Pawnee National Grassland and two from the Comanche National Grassland. Additional occurrences within Region

2 are known from Bureau of Land Management, Department of Defense, State of Colorado, and private lands. Ten

extant occurrences outside Region 2 are known from New Mexico, the Oklahoma panhandle, and Arizona. Decker, K. (2006, April 24). Asclepias uncialis Greene (wheel milkweed): a technical conservation assessment.

[Online]. USDA Forest Service, Rocky Mountain Region. Available: http://www.fs.fed.us/r2/projects/scp/

assessments/asclepiasuncialis.pdf [2024, October 25].