| Name | Ageratum houstonianum var. angustatum B. L. Robinson |
| Authorship | B. L. Robinson |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Ageratum houstonianum Miller |
| GUID | urn:lsid:ipni.org:names:7119-2 |
| Citation | 1923 Contr. Gray Herb. 68: 6 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ageratum houstonianum var. angustatum B. L. Robinson |
| Identification made in | [no date] (1) |
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