Synonyms
Polemonium acutiflorum subsp. occidentale (Greene) Hultén
Polemonium caeruleum subsp. occidentale (Greene) J.F.Davidson
Polemonium occidentale subsp. typicum Wherry
Polemonium caeruleum var. occidentale (Greene) H.St.John
Polemonium intermedium (Brand) Rydb.
Polemonium caeruleum var. pterospermum Benth.
Polemonium occidentale subsp. amygdalinum Wherry
Polemonium caeruleum subsp. amygdalinum (Wherry) Munz
Polemonium occidentale var. intermedium Brand
Polemonium helleri Brand
Polemonium caeruleum var. foliosissimum A.Gray