Betula papyrifera subsp. cordifolia (Regel) A.E. Murray
Betula papyrifera subsp. cordifolia (Regel) A.E. Murray is a synonym sensu TROPICOS of:
Betula cordifolia Regel, an accepted species name sensu FNA Ed. Comm., 1997.
Betula papyrifera subsp. cordifolia (Regel) A.E. Murray is a synonym sensu TROPICOS of:
Betula cordifolia Regel, an accepted species name sensu FNA Ed. Comm., 1997.