| Name | Polemonium occidentale Greene |
| Authorship | Greene |
| Rank | Species |
| Placed in | Polemonium Linnaeus |
| Contains | Polemonium occidentale subsp. lacustre Wherry Polemonium occidentale var. lacustre (Wherry) Lakela |
| Citation | 1890 Pittonia 2(8B): 75 |
| Holdings | 112 Specimens held in the Harvard University Herbaria identified as Polemonium occidentale Greene |
| Identification made in | [no date] (108), 1922 (1), 1956 (1), 2006 (1), 2018 (1) |
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