| Classification | Asteraceae: Eupatorium |
| Classification 1 | Asteraceae: Ageratina |
| Barcode(s) | 00007261 |
| Type Status | Holotype |
| Collector | E. W. Nelson |
| Collector number | 4244 |
| Country | Mexico |
| State | Nayarit |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Nayarit |
| Locality | Maria Madre Island, Tres Marias Islands |
| Date Collected | 1897-05-03 - 1897-05-25 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/81c68282-2a81-4dd9-85c8-6b8dc946db4c |
| Harvard University Herbaria Barcode | 00007261 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Eupatorium mariarum B. L. Robinson |
| Verified by | R. M. King & H. Robinson (US) |
| Date Determined | 1984 |
| Taxon Reference | (for Eupatorium mariarum B. L. Robinson) Proc. Amer. Acad. Arts 1901. 36: 481. |
| Family | Asteraceae |
| Determination | Ageratina ciliata (Lessing) King & H. Robinson |
| Determined by | B. L. Turner (TEX) |
| Date Determined | 1987 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Ageratina mariarum (B. L. Robinson) R. M. King & H. Robinson |
| Determined by | R. M. King & H. Robinson (US) |
| Date Determined | 1984 |
| Family | Asteraceae |
| Determination | Eupatorium pazcuarense Kunth |
| Determination Remarks | [label name] |
| Family | Asteraceae |
| Determination | Eupatorium mariarum B. L. Robinson |
| Determined by | B. L. Robinson (GH) |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
