⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Crataegus purpurea in version 1.1 of The Plant List.
This name is a synonym of Crataegus altaica .
The record derives from Tropicos which reports it as a synonym (record 27806595
) with original publication details: Arb. Brit. 2: 825 825 1838.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:60451290-2
.