| Classification | Asteraceae: Achaetogeron |
| Classification 1 | Asteraceae: Erigeron |
| Classification 2 | Asteraceae: Polyactidium |
| Harvard University Herbaria Barcode(s) | 00011372 |
| Type Status | Isotype, Possible Type |
| Collector | B. C. Seemann |
| Country | Mexico |
| Geography | North America: North America (CA, US, MX) (Region): Mexico |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1aca98a4-8754-4574-ae86-c4eec6b01b1d |
| Harvard University Herbaria Barcode | 00011372 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Achaetogeron seemannii A. Gray |
| Date Determined | 1933-03-** |
| Family | Asteraceae |
| Determination | Erigeron seemannii (Schultz Bipontinus ex Seemann) Greene |
| Determined by | G. Nesom |
| Date Determined | 1978 |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Polyactidium seemannii Schultz Bipontinus |
| Verified by | G. Nesom |
| Date Determined | 1978 |
| Taxon Reference | (for Polyactidium seemannii Schultz Bipontinus) Bot. Voy. Herald [Seemann] 1856. 301. |
| Family | Asteraceae |
| Type Status | Possible Type |
| Possible Type of | Polyactidium seemannii Schultz Bipontinus |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1983 |
| Taxon Reference | (for Polyactidium seemannii Schultz Bipontinus) Bot. Voy. Herald [Seemann] 1856. 301. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
