Vaccinium erythrocarpum was long considered synonymous with
V. japonicum, found in
East Asia, however the two have since been split into separate species. Both species are now considered members of the cranberry subgenus
Oxycoccus, both also placed into the section
Oxycoccoides. These species within sect.
Oxycoccoides differ from the rest of the subgenus as they are deciduous shrubs while sect.
Oxycoccus consists of trailing evergreen vines. ==Distribution==