| Name | Polemonium caeruleum subsp. occidentale (Greene) J. F. Davidson |
| Authorship | (Greene) J. F. Davidson |
| Rank | Subspecies |
| NomenclaturalStatus | Unknown |
| Placed in | Polemonium caeruleum Linnaeus |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Polemonium caeruleum subsp. occidentale (Greene) J. F. Davidson |
| Identification made in | [no date] (1), 1947 (2) |
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