Thurber's sandpaper plant
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Cornales
- family: Loasaceae
- genus: Petalonyx
- species: Petalonyx thurberi
- Kingman
Arizona- La Quinta
- Mecca
- Palm Springs
- Palmdale
- Rancho Mirage
California
United States