| Classification | Asteraceae: Achaetogeron |
| Classification 1 | Asteraceae: Erigeron |
| Harvard University Herbaria Barcode(s) | 00000562 |
| Type Status | Holotype |
| Collector | C. H. T. Townsend & C. M. Barber |
| Collector number | 175 |
| Country | Mexico |
| State | Chihuahua |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Chihuahua |
| Locality | Sierra Madres near Colonia Garcia, 8000 ft. [feet] |
| Date Collected | 1899-07-27 |
| Elevation | 2438 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/13c49f8e-f769-4859-89a3-76e512dfabb2 |
| Harvard University Herbaria Barcode | 00000562 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Achaetogeron purpurescens Greenman |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1983 |
| Taxon Reference | (for Achaetogeron purpurescens Greenman) Proc. Amer. Acad. Arts 1903. 39: 94. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Achaetogeron purpurescens Greenman |
| Verified by | G. Nesom (NCU) |
| Date Determined | 1973 |
| Taxon Reference | (for Achaetogeron purpurescens Greenman) Proc. Amer. Acad. Arts 1903. 39: 94. |
| Family | Asteraceae |
| Determination | Erigeron wislizenii subsp. purpurascens (Greenman) G. L. Nesom |
| Determined by | G. Nesom (NCU) |
| Date Determined | 1978 |
| Determination Remarks | [label name] [current name] |
| Family | Asteraceae |
| Determination | Achaetogeron purpurescens Greenman |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
