| Classification | Asteraceae: Psilocarphus | 
| Classification 1 | Asteraceae: Hesperevax | 
| Barcode(s) | 00021099 | 
| Type Status | Isotype | 
| Collector | K. T. Hartweg | 
| Collector number | 1812 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California | 
| Remarks | = Hesperevax caulescens (Bentham) A. Gray (det. J. D. Morefield, 1991) | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c581f890-bf62-4c50-9660-19579889a567 | 
| Harvard University Herbaria Barcode | 00021099 | 
| Herbarium | GH | 
| Family | Asteraceae | 
| Type Status |  Isotype | 
| Isotype of |  Psilocarphus caulescens Bentham | 
| Verified by | J. D. Morefield | 
| Taxon Reference | (for  Psilocarphus caulescens Bentham) Pl. Hartw. 1849. 319. | 
| Family | Asteraceae | 
| Determination |  Hesperevax caulescens (Bentham) A. Gray | 
| Determined by | J. D. Morefield | 
| Determination Remarks |  [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |