As classified in WFO snapshot
December 2022
Warning: older classification
subspecies
Hieracium rigidum subsp. acrifolium
Dahlst.
This subspecies name was first published in in Kongl. Svenska Vetensk. Acad. Handl., ser. 2, 26(3): 228. 1894
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .