| Classification | Brassicaceae: Physaria |
| Harvard University Herbaria Barcode(s) | 00219774 |
| Type Status | Holotype |
| Collector | S. L. O'Kane, Jr. & A. Prather-O'Kane |
| Collector number | 4511 |
| Country | United States of America |
| State | Montana |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Montana: Carbon County |
| Locality | Southern footslopes of the Pryor Mountains along road 3085 (Gyp Springs Road) ca. 0.9 miles over the Wyoming line and 2.3 air miles SW of Penney peak. |
| Georeference | 45.0, -108.41666667 Method: Unknown |
| Date Collected | 1998-07-01 |
| Elevation | 1451 m |
| Habitat | Barren hills and ridges; community of matformers and suffructescent plants including Astragalus, Arenaria, Machaeranthera, Hymenoxys and Agropyron. |
| Substrate | light pinkish, almost white, limestone-derived clayey-silt soil with rock fragments |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/153b5575-1510-44ee-af55-a1698f1e5e7c |
| Harvard University Herbaria Barcode | 00219774 |
| Herbarium | GH |
| Family | Brassicaceae |
| Type Status | Holotype |
| Holotype of | Physaria pachyphylla Grady & O'Kane |
| Determination Remarks | ined. as of May 2007 [is filed under name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
