⚠ Version 1.1 of The Plant List has been superseded and should no longer be used.
The new version is available at http://www.worldfloraonline.org/tpl/rjp-52335. The new version is enhanced, using more data sources including Taxonomic Expert Networks and will be more frequently updated.
The record derives from RJP (data supplied on ) which reports it as a synonym and as a spelling variant (record 52335) with original publication details: Derev'ya i kustarniki SSSR [Trees and shrubs of the USSR] Derev'ya i kustarniki SSSR [Trees and shrubs of the USSR]; 1949 526 1954.
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 brettschneideri in version 1 of The Plant List.