California Jacob's Ladder, Low Jacob's-ladder, Moving Polemonium, Showy 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 (Synonym: Polemonium carneum ssp. luteum) -
Elegant Jacob's-ladder, Elegant Polemonium: Polemonium elegans -
Annual Jacob's-ladder, Annual Polemonium: Polemonium micranthum (Synonym: Polemoniella micrantha) -
Showy Jacob's-ladder, Skunk-leaved Polemonium, Showy Polemonium: Polemonium pulcherrimum ssp. pulcherrimum (Synonyms: Polemonium berryi, Polemonium fasciculatum, Polemonium haydenii, Polemonium humile, Polemonium lindleyi, Polemonium pilosum, Polemonium pulcherrimum ssp. pulcherrimum, Polemonium pulcherrimum var. lindleyi, Polemonium pulcherrimum var. pilosum, Polemonium shastense) -