| Name | Proserpinaca palustris var. crebra Fernald & Griscom |
| Authorship | Fernald & Griscom |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Proserpinaca palustris Linnaeus |
| GUID | urn:lsid:ipni.org:names:210392-2 |
| Citation | 1935 Rhodora 37: 177 |
| Holdings | 221 Specimens held in the Harvard University Herbaria identified as Proserpinaca palustris var. crebra Fernald & Griscom |
| Identification made in | [no date] (213), 1934 (1), 2002 (5), 2008 (2) |
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