This name is a synonym of Crataegus microphylla K.Koch.
The record derives from RJP
(data supplied on 2011-10-18)
which reports it as a synonym (record 10522) with original publication details: Kve$Ktena C$KSR Kve$Ktena C$KSR; 1948 710 1948.
This name record (from RJP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Crataegus coccinea in version 1 of The Plant List.