Synonyms
Duschekia firma (Siebold & Zucc.) Pouzar
Alnus yasha Matsum.
Alnus hirtella (Franch. & Sav.) Koidz.
Alnus yasha var. microcarpa Callier
Alnus yasha var. macrocarpa Callier
Alnus firma f. hirtella (Franch. & Sav.) H.Ohba
Alnus firma var. hirtella Franch. & Sav.
Alnus firma var. yasha (Matsum.) H.J.P.Winkl.
Alnus firma subsp. hirtella (Franch. & Sav.) C.K.Schneid.
Alnaster firmus (Siebold & Zucc.) Murai
Alnaster firmus var. hirtellus (Franch. & Sav.) Murai