As classified in WFO snapshot
June 2024
Warning: older classification
subspecies
Polemonium caeruleum subsp. laxiflorum
(Regel) Koji Ito
This subspecies name was first published in Environm. Sci. (Hokkaido) 6: 261 (1983)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .