| Classification | Loasaceae |
| Harvard University Herbaria Barcode(s) | 00076078 |
| Type Status | Holotype |
| Collector | G. Thurber |
| Collector number | 683 |
| Country | United States of America |
| State | Arizona |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona |
| Locality | Valley of Gila |
| Date Collected | 1850-06-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d5e60498-a68c-472e-bb39-c363a1ed9964 |
| Harvard University Herbaria Barcode | 00076078 |
| Herbarium | GH |
| Family | Loasaceae |
| Determination | Petalonyx thurberi A. Gray |
| Determined by | A. Gray |
| Determination Remarks | [A. Gray (scripsit)] [is label name] [is Current name] |
| Annotation Text | n. gen. |
| Family | Loasaceae |
| Type Status | Holotype |
| Holotype of | Petalonyx thurberi A. Gray |
| Verified by | W. T. Kittredge |
| Date Determined | 2008 |
| Taxon Reference | (for Petalonyx thurberi A. Gray) Mem. Amer. Acad. Arts 1855. n.s. 5: 319. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Item Remarks | [With floral drawings on sheet, mounted with non-type specimens of Cooper s.n., 1860-1861, 263834, and Palmer 100, 1867, 263833] |
