As classified in WFO snapshot
June 2023
Warning: older classification
subspecies
Aster lanceolatus subsp. hesperius
(A.Gray) Semple & Chmiel.
This subspecies name was first published in Canad. J. Bot. 65(5): 1060 (1987):.
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .