Carduus adpressus subsp. rhodopeus (Velen.) Kožuharov & N.Andreev (original description)
Centaurea napulifera subsp. orbelica (Velen.) Kožuharov & N.Andreev accepted as Cyanus orbelicus (Velen.) Soják (original description)
Centaurea triumfetti subsp. achtarovii (Urum.) Kožuharov & N.Andreev accepted as Cyanus achtarovii (Urum.) Holub (original description)
Erigeron alpinus subsp. rhodopaeus (Vierh.) Kožuharov & N.Andreev (original description)
Erigeron uniflorus subsp. vichrenensis (Pawł.) Kožuharov & N.Andreev accepted as Erigeron vichrenensis Pawł. (original description)
Senecio doronicum subsp. glaberrimus (Rochel) Kožuharov & N.Andreev (original description)
Senecio nemorensis subsp. bulgaricus (Velen.) Kožuharov & N.Andreev accepted as Senecio nemorensis subsp. bulgaricus (Velen.) Greuter (original description)
Senecio papposus subsp. congestus (Stoj.) Peev accepted as Tephroseris papposa (Rchb.) Schur (original description)