As classified in WFO snapshot
June 2024
latest classification for this taxon
subspecies
Crataegus monogyna subsp. calycina
(Peterm.) Cajander
This subspecies name was first published in Suom. Kasvio , ed. 5: 357 (1906)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .