| Classification | Asteraceae: Eupatorium | 
| Classification 1 | Asteraceae: Ageratina | 
| Harvard University Herbaria Barcode(s) | 00007235 | 
| Type Status | Type,  Holotype | 
| Collector | C. A. Purpus | 
| Collector number | 1496 | 
| Country | Mexico | 
| State | México | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: México | 
| Date Collected | 1905 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/563dad8b-c905-4e12-b780-be7bff804abe | 
| Harvard University Herbaria Barcode | 00007235 | 
| Herbarium | GH | 
| Family | Asteraceae | 
| Type Status | Type | 
| Type of | Eupatorium isolepis B. L. Robinson | 
| Verified by | D. E. Boufford (A) | 
| Date Determined | 1981 | 
| Taxon Reference | (for  Eupatorium isolepis B. L. Robinson) Proc. Amer. Acad. Arts 1907. 43: 33. | 
| Family | Asteraceae | 
| Type Status | Holotype | 
| Holotype of | Eupatorium isolepis B. L. Robinson | 
| Verified by | R.M. King & H. Robinson | 
| Date Determined | 1977 | 
| Taxon Reference | (for  Eupatorium isolepis B. L. Robinson) Proc. Amer. Acad. Arts 1907. 43: 33. | 
| Family | Asteraceae | 
| Determination | Ageratina isolepis (B. L. Robinson) King & H. Robinson | 
| Determined by | B. L. Turner (TEX) | 
| Date Determined | 1987 | 
| Determination Remarks | [current name] | 
| Family | Asteraceae | 
| Determination | Ageratina isolepis (B. L. Robinson) King & H. Robinson | 
| Determined by | R.M. King & H. Robinson | 
| Date Determined | 1977 | 
| Family | Asteraceae | 
| Determination | Eupatorium isolepis B. L. Robinson | 
| Determined by | B.L. Robinson (GH) | 
| Family | Asteraceae | 
| Determination | Eupatorium isolepis B. L. Robinson | 
| Determination Remarks | [label name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |