The record derives from RJP (data supplied on ) which reports it as a synonym (record 14895) with original publication details: Encyclop‚die m‚thodique. Botanique Encyclop‚die m‚thodique. Botanique; 1783 84 1783.
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 pyrifolia in version 1 of The Plant List.