| Classification | Onagraceae: Calylophus | 
| Harvard University Herbaria Barcode(s) | 01625009 | 
| Collector | L. O. Williams & T. P. Williams | 
| Collector number | 3234 | 
| Country | United States of America | 
| State | Wyoming | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Wyoming: Sheridan County | 
| Locality | Little Tongue River Canyon | 
| Date Collected | 1936-07-04 - 1936-07-10 | 
| Verbatim Elevation | 7500 ft. | 
| Habitat | Dry rocky hillside | 
| Container | Flora of the Big Horn Mountains, Wyoming | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b0f3241d-7002-4783-9306-9e1ed7f77d7c | 
| Harvard University Herbaria Barcode | 01625009 | 
| Herbarium | GH | 
| Family | Onagraceae | 
| Determination | Calylophus serrulatus (Nuttall) P. H. Raven | 
| Determined by | Towner, Howard Frost | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |