Alnus rugosa var. serrulata (Aiton) H.J.P. Winkler

Alnus rugosa var. serrulata (Aiton) H.J.P. Winkler is a synonym sensu FNA Ed. Comm., 1997 of:

Alnus serrulata (Aiton) Willdenow, an accepted species name sensu FNA Ed. Comm., 1997.