| Name | Hydrophyllum occidentale var. watsonii A. Gray |
| Authorship | A. Gray |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Hydrophyllum occidentale (S. Watson) A. Gray |
| GUID | urn:lsid:ipni.org:names:125328-2 |
| Citation | 1875 Proc. Amer. Acad. Arts 10: 314 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hydrophyllum occidentale var. watsonii A. Gray |
| Identification made in | [no date] (2) |
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