| Name | Physaria argyraea subsp. diffusa (Rollins) O'Kane & Al-Shehbaz | 
| Authorship | (Rollins) O'Kane & Al-Shehbaz | 
| Rank | Subspecies | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Physaria argyraea (A. Gray) O'Kane & Al-Shehbaz | 
| GUID | urn:lsid:ipni.org:names:1196507-2 | 
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Physaria argyraea subsp. diffusa (Rollins) O'Kane & Al-Shehbaz | 
| Identification made in | [no date] (2), 2009 (1) | 
