| Classification | Asteraceae: Eupatorium |
| Classification 1 | Asteraceae: Decachaeta |
| Classification 2 | Asteraceae: Eupatorium |
| Harvard University Herbaria Barcode(s) | 00007266 |
| Type Status | Holotype |
| Collector | B. C. Seemann |
| Country | Mexico |
| Geography | North America: North America (CA, US, MX) (Region): Mexico |
| Locality | N. W. Mexico |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/9fcc10c5-8569-40f3-a181-d0d09a327146 |
| Harvard University Herbaria Barcode | 00007266 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Eupatorium polybotryum de Candolle |
| Determined by | B. L. Robinson (GH) |
| Family | Asteraceae |
| Determination | Eupatorium microcephalum Regel |
| Date Determined | 1886-03-** |
| Determination Remarks | Written on sheet [is label name] |
| Annotation Text | n. sp. |
| Family | Asteraceae |
| Determination | Eupatorium scabrellum B. L. Robinson |
| Determined by | R. McVaugh (MICH) |
| Date Determined | 1968 |
| Family | Asteraceae |
| Determination | Decachaeta scabrella (Robinson) King & H. Robinson |
| Determined by | R. M. King & H. Robinson (US) |
| Date Determined | 1968 |
| Determination Remarks | [is Current name] |
| Annotation Text | Decachaeta scabrella (B. L. Robinson) R. M. King & H. Robinson var. scabrella |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Eupatorium microcephalum Regel |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1982 |
| Taxon Reference | (for Eupatorium microcephalum Regel) Index Seminum [St. Petersburg (Petropolitanus)] 1860. 35. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Eupatorium microcephalum A. Gray |
| Verified by | K. Gandhi (GH) |
| Date Determined | 2007-11-15 |
| Determination Remarks | non Eupatorium microcephalum Regel (1860) |
| Taxon Reference | (for Eupatorium microcephalum A. Gray) Proc. Amer. Acad. Arts 1886. 21: 384. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
