| Name | Ageratum houstonianum f. niveum B. L. Robinson |
| Authorship | B. L. Robinson |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Ageratum houstonianum Miller |
| GUID | urn:lsid:ipni.org:names:303309-2 |
| Citation | 1923 Contr. Gray Herb. 68: 6 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Ageratum houstonianum f. niveum B. L. Robinson |
| Identification made in | [no date] (3) |