This name is a synonym of Crataegus calpodendron (Ehrh.) Medik..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50309892) with original publication details: Bot. Gaz. 25(5): 360 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:69093-2.
This name was in version 1 of The Plant List, record tro-50309892.