| Classification | Brassicaceae: Polyctenium |
| Harvard University Herbaria Barcode(s) | 00019446 |
| Type Status | Holotype |
| Collector | A. Tiehm & M. J. Williams |
| Collector number | 7135 |
| Country | United States of America |
| State | Nevada |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Nevada: Washoe County |
| Locality | Virginia Range, foothills of the range east of Little Washoe Lake, T17N, R20E, sec. 16 |
| Date Collected | 1982-06-10 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/75cbcce0-c1f7-4009-bc4a-477e10640f48 |
| Harvard University Herbaria Barcode | 00019446 |
| Herbarium | GH |
| Family | Brassicaceae |
| Type Status | Holotype |
| Holotype of | Polyctenium williamsiae Rollins |
| Verified by | R. C. Rollins |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Polyctenium williamsiae Rollins) J. Arnold Arbor. 1983. 64: 508. |
| Sex | not determined |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
