⚠ Version 1 of The Plant List has been superseded.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 porteri in version 1.1 of The Plant List.
This name is a synonym of Crataegus pruinosa var. porteri .
The record derives from Tropicos which reports it as a synonym (record 27803269
) with original publication details: Bull. New York Bot. Gard. 1(5): 448 448 1900.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:68793-2
.