As classified in WFO snapshot
June 2023
Warning: older classification
subspecies
Hieracium serratifrons subsp. caliginosum
Dahlst.
This subspecies name was first published in in Kongl. Svenska Vetensk. Acad. Handl., ser. 2, 25(3): 103. 1893
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .