As classified in WFO snapshot
June 2024
Warning: older classification
subspecies
Haplopappus spinulosus subsp. incisifolius
(I.M.Johnst.) H.M.Hall
This subspecies name was first published in Publ. Carnegie Inst. Wash. 389: 75 (1928)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .