| Classification | Asteraceae: Ageratum |
| Classification 1 | Asteraceae: Alomia |
| Harvard University Herbaria Barcode(s) | 00000643 |
| Type Status | Holotype |
| Collector | C. G. Pringle |
| Collector number | 2166 |
| Country | Mexico |
| State | Jalisco |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Jalisco |
| Locality | near Guadalajara |
| Date Collected | 1888-12-12 |
| Habitat | Wet cliffs |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ae11f366-02a7-4edb-b83f-847cb9de8a16 |
| Harvard University Herbaria Barcode | 00000643 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Ageratum callosum S. Watson |
| Verified by | V. M. Bates |
| Date Determined | 1984 |
| Taxon Reference | (for Ageratum callosum S. Watson) Proc. Amer. Acad. Arts 1890. 25: 153. |
| Family | Asteraceae |
| Determination | Alomia callosa B. L. Robinson |
| Determined by | B. L. Robinson |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
