Wyoming Natural Diversity Database and UW Extension Release New Thistle Field Guide

Laramie, Wyo.—May 19, 2022—This month, the Wyoming Natural Diversity Database released a new field guide on Wyoming thistles, designed to assist those who work or recreate outdoors in identifying native and non-native thistles. Titled Wyoming Thistle Field Guide and published in partnership with the University of Wyoming Extension, the pocket-sized guide features photos and descriptions of all 24 thistles found in the state, including the five noxious invasives.

Author Bonnie Heidel, lead botanist for the Wyoming Natural Diversity Database, says that the purpose of the new publication is to “b...