Anthemis argyrophylla (Halácsy & Georgiev) Velen. (original description)
Anthemis riloensis Velen. accepted as Anthemis macedonica subsp. orbelica (Pančić) Oberpr. & Greuter (original description)
Carduus rhodopeus Velen. accepted as Carduus adpressus subsp. rhodopeus (Velen.) Kožuharov & N.Andreev (original description)
Carlina thracica Velen. accepted as Carlina corymbosa L. (original description)
Carthamus gracilis Čelak. accepted as Carthamus tenuis (Boiss. & Blanche) Bornm. (original description)
Hieracium pseudoalbidum Čelak. (original description)
Hieracium purkynei Čelak. accepted as Hieracium gombense subsp. purkynei (Čelak.) Zahn (original description)
Jurinea bulgarica Velen. (original description)
Scorzonera rumelica Velen. accepted as Scorzonera mollis M.Bieb. (original description)
Senecio bulgaricus Velen. accepted as Senecio nemorensis subsp. bulgaricus (Velen.) Greuter (original description)