This name is a synonym of Crataegus divergens Sarg..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50294483) with original publication details: New York State Mus. Bull. 75: 51 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:68472-2.
This name was in version 1 of The Plant List, record tro-50294483.