Canada's Plant Hardiness Site

Polemoniaceae phlox family
Polemonium occidentale subsp. occidentale Greene
En: western polemonium, western Jacob's-ladder;
Fr: polemoine de l'Ouest

• [=Polemonium caeruleum L. subsp. amygdalium (Wherry) Munz]
• [=Polemonium caeruleum L. subsp. occidentale (Greene) J.F.Davidson]
• [=Polemonium caeruleum L. var. pterospermum Benth.]
• [=Polemonium helleri Brand]
• [=Polemonium intermedium (Brand) Rydb.]
• [=Polemonium occidentale Greene subsp. amygdalium Wherry]
• [=Polemonium occidentale Greene subsp. typicum Wherry, nom. inval.]