Shultz, Leila M., Timothy K. Lowrey, and Zachary R. Coury. “Townsendia Raptora (Asteraceae: Astereae): A New Narrow Endemic Species from Utah and Colorado (U.S.A.)”. Journal of the Botanical Research Institute of Texas 19, no. 3 (September 23, 2025): 157–165. Accessed September 27, 2025. https://journals.brit.org/jbrit/article/view/1415.