Achillea crithmifolia var. dorfleri (Hayek) Gajić accepted as Aspilia floribunda (Gardner) Baker (original description)
Achillea tanacetifolia subsp. distans (Waldst. & Kit.) Gajić accepted as Aspilia pseudoviguiera H.Rob. accepted as Aspilia floribunda (Gardner) Baker (original description)
Centaurea arenaria var. tauscheri (A.Kern.) Gajić (original description)
Centaurea nissana f. orbelica (Vel.) Ganc (original description)
Centaurea splendens f. brunnea (Hal) Gajić (original description)
Centaurea splendens var. epapposa (Vel.) Gajić (original description)
Centaurea splendens var. feichtingeriana (J.Wagen.) Gajić (original description)
Centaurea splendens var. ipecensis (Rech.f.) Gajić accepted as Centaurea ipecensis Rech.f. (original description)
Cirsium appendiculatum f. pantocsekii (Rohl) Gajić accepted as Cirsium appendiculatum Griseb. (original description)
Cirsium arvense f. incanum (Beck) Gajić accepted as Cirsium arvense (L.) Scop. (original description)
Cirsium ligulare var. albanum (Wettst.) Gajić (original description)
Leontodon montanus subsp. pseudotaraxaci var. rilaensis (Hayek) Gajić (original description)
Taraxacum serotinum subsp. haussknechtii (Uechtr.) Gajić (original description)