Betula papyrifera var. humilis (Regel) Fernald & Raup

Betula papyrifera var. humilis (Regel) Fernald & Raup is a synonym sensu FNA Ed. Comm., 1997 of:

Betula pendula subsp. mandshurica (Regel) Ashburner & McAllister, an accepted subspecies name sensu POWO.