| Classification | Orobanchaceae: Castilleja | 
| Harvard University Herbaria Barcode(s) | 01878929 | 
| Collector | F. W. Pennell & L. Constance | 
| Collector number | 20908 | 
| Country | United States of America | 
| State | Idaho | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Idaho: Idaho County | 
| Locality | Valley S. E. of Rocky Ridge Lookout, Clearwater National Forest | 
| Date Collected | 1937-07-15 | 
| Verbatim Elevation | 5900-6000 f. alt | 
| Habitat | Rocky soil | 
| Project | US and Canada - Mass Digitization | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/23c164ad-ad08-4f21-9ea7-090a96542c8f | 
| Harvard University Herbaria Barcode | 01878929 | 
| Herbarium | GH | 
| Previous ownership | The Academy of Natural Sciences of Philadelphia | 
| Family | Orobanchaceae | 
| Determination | Castilleja rhexifolia Rydberg | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |