California Jacob's Ladder, Moving Polemonium, Low Jacob's-ladder: Polemonium californicum (Synonyms: Polemonium columbianum, Polemonium pulcherrimum ssp. tricolor, Polemonium pucherrimum var. calycinum) -
Great Polemonium, Royal Jacob's-ladder, Salmon Polemonium: Polemonium carneum (Synonyms: Polemonium carneum ssp. carneum, Polemonium carneum ssp. luteum) -
Elegant Jacob's-ladder, Elegant Polemonium: Polemonium elegans -
Annual Polemonium, Annual Jacob's-ladder: Polemonium micranthum (Synonym: Polemoniella micrantha) -
Western Polemonium: Polemonium occidentale (Synonyms: Polemonium caeruleum ssp. amygdalium, Polemonium caeruleum ssp. occidentale, Polemonium caeruleum var. pterospermum, Polemonium helleri, Polemonium intermedium, Polemonium occidentale ssp. amygdalium, Polemonium occidentale ssp. occidentale, Polemonium occidentale ssp. typicum) -
Showy Polemonium, Showy Jacob's-ladder, Jacob's-ladder, Skunk-leaved Polemonium: Polemonium pulcherrimum ssp. pulcherrimum (Synonyms: Polemonium berryi, Polemonium haydenii, Polemonium pilosum, Polemonium pulcherrimum var. pilosum, Polemonium pulcherrimum var. pulcherrimum, Polemonium shastense) -
Sticky Polemonium: Polemonium viscosum (Synonyms: Polemonium viscosum ssp. genuinum, Polemonium viscosum ssp. lemmonii) -