| Classification | Asteraceae: Eupatorium |
| Harvard University Herbaria Barcode(s) | 00007815 |
| Type Status | Holotype |
| Collector | E. P. Killip & A. C. Smith |
| Collector number | 22688 |
| Country | Peru |
| State | Ayacucho |
| Geography | South America: South America (Region) (Region): Peru: Ayacucho |
| Locality | Aina, between Huanta and Río Apurimac |
| Date Collected | 1929-05-17 |
| Elevation | 750 - 1000 m |
| Habitat | Thickets. |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/329c2851-5550-4ecb-8bd8-3f897e0b003b |
| Harvard University Herbaria Barcode | 00007815 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Eupatorium microstemon var. perennans B. L. Robinson |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1982 |
| Taxon Reference | (for Eupatorium microstemon var. perennans B. L. Robinson) Contr. Gray Herb. 1934. 104: 22. |
| Family | Asteraceae |
| Determination | Eupatorium microstemon var. perennans B. L. Robinson |
| Determination Remarks | [label name] [current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
