Abies alba subsp. borisii-regis (Mattf.) Kožuharov & N. Andreev, Opred. Viss. Rast. Balg.: 785. 1992
Abies alba subsp. borisii-regis, Opred. Viss. Rast. Balg.: 785. 1992
is new combination for Abies borisii-regis in Notizbl. Bot. Gart. Berlin-Dahlem 9: 235. 1925
Abies alba subsp. borisii-regis, Opred. Viss. Rast. Balg.: 785. 1992