| Name | Ageratum maritimum f. calvum B. L. Robinson |
| Authorship | B. L. Robinson |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Ageratum maritimum W. Peck |
| GUID | urn:lsid:ipni.org:names:7135-2 |
| Citation | 1913 Contr. Gray Herb. 42: 467 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Ageratum maritimum f. calvum B. L. Robinson |
| Identification made in | [no date] (3), 1967 (1), 1981 (2) |