Alexander, Jason Andrew, Wayne Whaley, and Natalie Blain. “The Lomatium Grayi Complex (Apiaceae) of the Western United States: A Taxonomic Revision Based on Morphometric, Essential Oil Composition, and Larva-Host Coevolution Studies”. Journal of the Botanical Research Institute of Texas 12, no. 2 (November 20, 2018): 387-444. Accessed September 22, 2021. https://journals.brit.org/jbrit/article/view/945.