| Classification | Onagraceae: Clarkia |
| Harvard University Herbaria Barcode(s) | 01673793 |
| Collector | L. Constance |
| Collector number | 2346 |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Madera County |
| Locality | Fresno Flats on the Fresno River 1 mi. SW. of Oakhurst |
| Date Collected | 1938-06-28 |
| Verbatim Elevation | 2300 ft. |
| Habitat | sandy soil of S. bank with Pinus ponderosa-Quercus lobata association |
| Container | Plants of California |
| Project | US and Canada - Mass Digitization |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d5f8503c-b3a3-46fa-8931-af40542434c2 |
| Harvard University Herbaria Barcode | 01673793 |
| Herbarium | GH |
| Previous ownership | [Ex] Herbarium of the University of California |
| Family | Onagraceae |
| Determination | Clarkia williamsonii (Durand & Hilgard) F. H. Lewis & M. E. Lewis |
| Determined by | Lewis, Margaret Ensign & Lewis, Frank Harlan |
| Date Determined | 1951 |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
