| Name | Hackelia diffusa var. cottonii (Piper) Carr |
| Authorship | (Piper) Carr |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Hackelia diffusa (Lehmann) I. M. Johnston |
| GUID | urn:lsid:ipni.org:names:116797-2 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Hackelia diffusa var. cottonii (Piper) Carr |
| Identification made in | [no date] (10) |
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