Synonyms
Alnus glutinosa var. japonica Matsum.
Alnus maritima var. obtusata Franch. & Sav.
Alnus serrulatoides var. katoana (Yanagita) Sugim.
Alnus katoana Yanagita
Alnus glutinosa var. obtusata (Franch. & Sav.) H.J.P.Winkl.
Alnus serrulatoides f. katoana (Yanagita) H.Ohba
Alnus obtusata (Franch. & Sav.) Makino