Pyne, Milo, Steve L. Orzell, and Edwin L. Bridges. 2019. “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 (1):51-61. https://doi.org/10.17348/jbrit.v13.i1.825.