| Classification | Loasaceae: Mentzelia |
| Harvard University Herbaria Barcode(s) | 00003636 |
| Type Status | Holotype |
| Collector | I. M. Johnston |
| Collector number | 7717 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | 11 miles north of Parras |
| Date Collected | 1938-09-16 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/8c5f6fc9-a654-4650-a11c-f17e5edb0acd |
| Harvard University Herbaria Barcode | 00003636 |
| Herbarium | GH |
| Family | Loasaceae |
| Type Status | Holotype |
| Holotype of | Mentzelia pachyrhiza I. M. Johnston |
| Verified by | B. L. Turner |
| Taxon Reference | (for Mentzelia pachyrhiza I. M. Johnston) J. Arnold Arbor. 1940. 21: 71. |
| Family | Loasaceae |
| Determination | Mentzelia pachyrhiza I. M. Johnston |
| Determined by | B. L. Turner |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
