This name is a synonym of Crataegus brunetiana var. fernaldii (Sarg.) E.J. Palmer.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50080439) with original publication details: Rhodora 5(54): 166–167 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:68279-2.
This name was in version 1 of The Plant List, record tro-50080439.