| Name | Polemonium occidentale subsp. lacustre Wherry |
| Authorship | Wherry |
| Rank | Subspecies |
| Placed in | Polemonium occidentale Greene |
| Citation | 1945 Amer. Midl. Naturalist 34: 376 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Polemonium occidentale subsp. lacustre Wherry |
| Identification made in | [no date] (2), 2018 (1) |
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