Shultz, L. M., T. K. Lowrey, and Z. 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, vol. 19, no. 3, Sept. 2025, pp. 157-65, doi:10.17348/jbrit.v19.i3.1415.