Synonyms: Alnus aurea; Alnus cerifera (homotypic); Alnus dubia (homotypic); Alnus emarginata (heterotypic); Alnus februaria; Alnus februaria var. incisa; Alnus februaria var. maculata; Alnus februaria var. oxyacanthifolia; Alnus februaria var. parvifolia; Alnus februaria var. pinnatifida; Alnus februaria var. quercifolia; Alnus februaria var. sardoa; Alnus glutinosa f. aurea; Alnus glutinosa f. balatonialis (homotypic); Alnus glutinosa f. bosniaca; Alnus glutinosa f. cuneata; Alnus glutinosa f. dubia; Alnus glutinosa f. glabra; Alnus glutinosa f. graeca; Alnus glutinosa f. imberbis; Alnus glutinosa f. incisa; Alnus glutinosa f. intermedia; Alnus glutinosa f. laciniata; Alnus glutinosa f. lobulata; Alnus glutinosa f. longipedunculata (homotypic); Alnus glutinosa f. macrocarpa; Alnus glutinosa f. maculata; Alnus glutinosa f. microcarpa (homotypic); Alnus glutinosa f. minutifolia (homotypic); Alnus glutinosa f. parvifolia; Alnus glutinosa f. pilosa; Alnus glutinosa f. puberula; Alnus glutinosa f. pyramidalis; Alnus glutinosa f. quercifolia; Alnus glutinosa f. rubrinervia; Alnus glutinosa f. sardoa; Alnus glutinosa f. sorbifolia; Alnus glutinosa f. subimberbis (homotypic); Alnus glutinosa f. sublobata; Alnus glutinosa f. subpilosa; Alnus glutinosa f. subserrata; Alnus glutinosa f. tenuifolia; Alnus glutinosa var. aurea; Alnus glutinosa var. bosniaca; Alnus glutinosa var. emarginata; Alnus glutinosa var. foliis-variegatis; Alnus glutinosa var. imberbis; Alnus glutinosa var. imperialis (homotypic); Alnus glutinosa var. incisa; Alnus glutinosa var. laciniata; Alnus glutinosa var. macrocarpa; Alnus glutinosa var. microphylla; Alnus glutinosa var. oxyacanthifolia; Alnus glutinosa var. pinnatifida; Alnus glutinosa var. pyramidalis; Alnus glutinosa var. quercifolia; Alnus glutinosa var. rubrinervia; Alnus glutinosa var. sorbifolia; Alnus glutinosa var. sublobata; Alnus glutinosa var. subrotunda; Alnus glutinosa var. subserrata; Alnus glutinosa var. tenuifolia; Alnus imperialis; Alnus incisa; Alnus macrocarpa (heterotypic); Alnus morisiana; Alnus nigra; Alnus nitens; Alnus oxyacantha (homotypic); Alnus oxyacanthifolia; Alnus prunifolia; Alnus quercifolia; Alnus rotundifolia (heterotypic); Alnus sorbifolia; Alnus suaveolens (heterotypic); Betula alnus var. laciniata; Betula emarginata; Betula laciniata (heterotypic)