WY CAPS Progrram
University of Wyoming
Dept. Ecosystem Science & Management: 3354
1000 East University Ave.
Laramie, WY 82071
Longspine sandbur is a county declared weed in Converse, Laramie, Washakie and Weston counties in Wyoming.
Photo by Joseph M. DiTomaso, University of California - Davis, Bugwood.org