Petronymphe is a genus of flowering plants endemic to Mexico. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Brodiaeoideae (formerly the family Themidaceae). The only known species is the bulbous plant Petronymphe decora, endemic to the State of Guerrero.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0