Mathiasen, Robert L., and Shawn C. Kenaley. “A Morphological Comparison of Arceuthobium Abietinum and A. Campylopodum (Viscaceae) and Nomenclatural Changes for A. Abietinum”. Journal of the Botanical Research Institute of Texas 13, no. 1 (July 23, 2019): 83–101. Accessed May 8, 2024. https://journals.brit.org/jbrit/article/view/829.