Centaurea biebersteinii (Jaub. & Spach) Walp. accepted as Centaurea gabrieljanae Greuter (original description)
Centaurea leuzeoides (Jaub. & Spach) Walp. accepted as Psephellus leuzeoides (Jaub. & Spach) Wagenitz (original description)
Centaurea linnaeana Walp. accepted as Centaurea sphaerocephala L. (original description)
Centaurea persica (DC.) Walp. accepted as Centaurea gaubae (Bornm.) Wagenitz (original description)
Centaurea stenophylla (Jaub. & Spach) Walp. accepted as Centaurea gaubae (Bornm.) Wagenitz (original description)
Centaurea tournefortii (Jaub. & Spach) Walp. accepted as Centaurea glastifolia L. (original description)
Cephalophora grandiflora (Torr. & A.Gray) Walp. accepted as Hymenoxys grandiflora (Torr. & A.Gray ex Torr. & A.Gray) K.F.Parker (original description)
Cirsium rhodo-leucanthum Walp. accepted as Cirsium esculentum (Siev.) C.A.Mey. (original description)
Crupina intermedia (Mutel) Walp. (original description)
Crupina pseudocrupina (Mutel) Walp. (original description)
Microrhynchus picridioides (Webb) Walp. accepted as Launaea picridioides (Webb) Engl. (original description)
Myconia macrotus Walp. (original description)
Myconia multicaulis Walp. (original description)
Picris cupuligera (Durieu) Walp. (original description)
Tripleurospermum uniglandulosum Walp. (original description)