| Name | Polemonium caeruleum subsp. villosum (Rudolph ex Georgi) Brand |
| Authorship | (Rudolph ex Georgi) Brand |
| Rank | Subspecies |
| Placed in | Polemonium caeruleum Linnaeus |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Polemonium caeruleum subsp. villosum (Rudolph ex Georgi) Brand |
| Identification made in | [no date] (1), 1922 (1), 1947 (1) |