| Classification | Asteraceae: Achaetogeron |
| Classification 1 | Asteraceae: Erigeron |
| Harvard University Herbaria Barcode(s) | 00000558 |
| Type Status | Syntype, Holotype |
| Collector | Edw. Palmer |
| Collector number | 821 |
| Country | Mexico |
| State | Durango |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Durango |
| Locality | City of Durango and vicinity |
| Date Collected | 1896-04-** - 1896-11-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/024da72d-00cd-4ece-a7ec-509a772d50b9 |
| Harvard University Herbaria Barcode | 00000558 |
| Herbarium | GH |
| Previous ownership | Ex US |
| Family | Asteraceae |
| Type Status | Syntype |
| Syntype of | Achaetogeron griseus Greenman |
| Verified by | D. E. Boufford |
| Date Determined | 1983 |
| Determination Remarks | "(No holotype designated)" |
| Taxon Reference | (for Achaetogeron griseus Greenman) Proc. Amer. Acad. Arts 1905. 41: 254. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Achaetogeron griseus Greenman |
| Verified by | G. L. Nesom (NCU) |
| Date Determined | 1978 |
| Taxon Reference | (for Achaetogeron griseus Greenman) Proc. Amer. Acad. Arts 1905. 41: 254. |
| Family | Asteraceae |
| Determination | Erigeron griseus (Greenman) G. L. Nesom |
| Determined by | G. L. Nesom (NCU) |
| Date Determined | 1978 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Achaetogeron griseus Greenman |
| Determined by | E. L. Larsen |
| Date Determined | 1933-03-01 |
| Family | Asteraceae |
| Determination | Achaetogeron griseus Greenman |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
