Petronymphe is a genus of flowering plants endemic to Mexico.

It is placed in the family Asparagaceae, subfamily Brodiaeoideae.

[3] It was published by Harold Emery Moore in 1951.

[2] It consists of two species:[2] Petronymphe rara is endemic to the Mexican state of Oaxaca, and Petronymphe decora is endemic to Guerrero.

This Asparagaceae article is a stub.