This pocket-sized (4 X 6.5”) guide incudes full color photos, keys, and descriptions to help you identify and distinguish between Wyoming’s 19 native and five introduced thistle species. Native thistles provide important resources for wildlife, while introduced species disrupt ecosystems. It’s good to know the difference!
69 pages, heavy-duty paper, spiral binding
UW Extension Publication B-1316
By Bonnie Heidel, Wyoming Natural Diversity Database