| Classification | Asteraceae: Ageratum |
| Barcode(s) | 00000641 |
| Type Status | Holotype |
| Collector | E. W. Nelson |
| Collector number | 2822a |
| Country | Mexico |
| State | Oaxaca |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Oaxaca |
| Locality | Between Zanatepec and Tapana, 650 ft. [feet] |
| Date Collected | 1895-07-16 |
| Elevation | 198 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/36fa2046-dd86-41f4-9ed2-77da092434c5 |
| Harvard University Herbaria Barcode | 00000641 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Ageratum albidum de Candolle |
| Verified by | V. Bates |
| Date Determined | 1985 |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Ageratum albidum var. nelsonii B. L. Robinson |
| Verified by | M. F. Johnson |
| Date Determined | 1967 |
| Taxon Reference | (for Ageratum albidum var. nelsonii B. L. Robinson) Contr. Gray Herb. 1913. 42: 471. |
| Family | Asteraceae |
| Determination | Ageratum albidum var. nelsonii B. L. Robinson |
| Determined by | B. L. Robinson |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Ageratum corymbosum Zuccagni |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
