Acer opalus subsp. italum (Lauth) Gams in Hegi, Ill. Fl. Mitt.-Eur. 5: 291. 1924
Acer opalus subsp. italum in Hegi, Ill. Fl. Mitt.-Eur. 5: 291. 1924
is new combination for Acer italum, De Acere: 32. 1781
Acer opalus subsp. italum in Hegi, Ill. Fl. Mitt.-Eur. 5: 291. 1924