| Classification | Asteraceae: Achaetogeron |
| Classification 1 | Asteraceae: Erigeron |
| Harvard University Herbaria Barcode(s) | 00006801 |
| Type Status | Holotype |
| Collector | C. G. Pringle |
| Collector number | 1273 |
| Country | Mexico |
| State | Chihuahua |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Chihuahua |
| Locality | Alluviums of Arroyo Aucho, Sierra Madre |
| Date Collected | 1887-10-15 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/84d56438-9bd2-4bc0-8d93-daae788bd66d |
| Harvard University Herbaria Barcode | 00006801 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Achaetogeron seemannii A. Gray |
| Determination Remarks | [is label name] |
| Family | Asteraceae |
| Determination | Erigeron alcicornutus Greenman |
| Date Determined | 1904-12-01 |
| Family | Asteraceae |
| Determination | Erigeron inoptatus A. Gray |
| Determined by | G. Nesom |
| Date Determined | 1978 |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Erigeron alcicornutus Greenman |
| Verified by | G. Nesom |
| Date Determined | 1978 |
| Taxon Reference | (for Erigeron alcicornutus Greenman) Proc. Amer. Acad. Arts 1905. 41: 255. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Erigeron alcicornutus Greenman |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1983 |
| Taxon Reference | (for Erigeron alcicornutus Greenman) Proc. Amer. Acad. Arts 1905. 41: 255. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
