Achillea thracica Velen. (original description)
Anthemis retusa Velen. accepted as Cota brachmannii (Boiss. & Heldr.) Boiss. (original description)
Carduus globifer Velen. accepted as Carduus candicans subsp. globifer (Velen.) Kazmi (original description)
Carduus nutans subsp. leiophyllus (Petrovič) Stoj. & Stef. (original description)
Centaurea candida Velen. accepted as Centaurea affinis subsp. candida (Velen.) Dostál (original description)
Centaurea gracilenta Velen. (original description)
Centaurea stribrnyi Velen. accepted as Centaurea salonitana Vis. (original description)
Centaurea varnensis Velen. (original description)
Crepis stribrnyi Velen. accepted as Crepis foetida subsp. rhoeadifolia (M.Bieb.) Čelak. (original description)
Gnaphalium balcanicum Velen. accepted as Gnaphalium supinum L. accepted as Omalotheca supina (L.) DC. (original description)
Hieracium skorpilii Freyn (original description)
Hypochaeris pelivanovicii Velen. accepted as Hypochaeris maculata subsp. pelivanovicii (Velen.) Hayek (original description)
Rodigia bulgarica Velen. accepted as Crepis commutata (Spreng.) Greuter (original description)
Senecio arnautorum Velen. accepted as Jacobaea arnautorum (Velen.) Pelser (original description)