Pyne, Milo, Steve L. Orzell, and Edwin L. Bridges. “Physalis Macrophysa (Solanaceae: Physalinae: Subgenus Rydbergis), Its Taxonomic Disposition and Relation to Other Material With Large Inflated Fruiting Calyces”. Journal of the Botanical Research Institute of Texas 13, no. 1 (July 23, 2019): 51–61. Accessed December 22, 2024. https://journals.brit.org/jbrit/article/view/825.