Achyrophorus maculatus var. oblongifolius DC. accepted as Hypochaeris maculata L. (original description)
Achyrophorus tenuifolius var. neoeanus DC. (original description)
Andryala lyrata var. incana (DC.) DC. accepted as Andryala ragusina L. (original description)
Barkhausia glandulosa var. pinnatipartita DC. accepted as Crepis foetida L. (original description)
Barkhausia nana var. lyratifolia DC. accepted as Askellia pygmaea (Ledeb.) Sennikov (original description)
Crepis polymorpha var. humilis (Gaudin) DC. accepted as Crepis capillaris (L.) Wallr. (original description)
Hieracium californicum DC. accepted as Malacothrix saxatilis (Nutt.) Torr. & A.Gray (original description)
Hieracium frigidum DC. accepted as Crepis chrysantha (Ledeb.) Turcz. (original description)
Hieracium madagascariense DC. accepted as Tolpis capensis (L.) Sch.Bip. (original description)
Hymenonema aspera (Desf.) DC. (original description)
Lactuca undulata var. dentata DC. accepted as Lactuca undulata Ledeb. (original description)
Leontodon rosanii (Ten.) DC. accepted as Leontodon hirtus L. (original description)
Microrhynchus nudicaulis var. divaricatus (Desf.) DC. accepted as Launaea nudicaulis (L.) Hook.f. (original description)
Nabalus bootii DC. (original description)
Phaenopus acanthifolius (Willd.) DC. accepted as Lactuca acanthifolia (Willd.) Boiss. (original description)
Phaenopus triqueter (Labill.) DC. accepted as Lactuca triquetra (Labill.) Boiss. (original description)
Phaenopus vimineus (L.) DC. accepted as Lactuca viminea (L.) J.Presl & C.Presl (original description)
Podospermum canum var. glabratum DC. accepted as Podospermum meyeri K.Koch (original description)
Rothia laxiflora DC. accepted as Andryala laxiflora DC. (original description)
Scorzonera macrosperma Turcz. ex DC. accepted as Scorzonera albicaulis Bunge (original description)
Scorzonera prescottii DC. accepted as Scorzonera crispa M.Bieb. (original description)
Sonchus bocconi DC. accepted as Reichardia picroides (L.) Roth (original description)
Sonchus jacquinii var. congestus (Willd.) DC. accepted as Sonchus congestus Willd. (original description)
Thrincia hirta var. arenaria (Duby) DC. accepted as Leontodon saxatilis subsp. saxatilis Lam. (original description)
Thrincia hirta var. psilocalyx DC. accepted as Leontodon saxatilis Lam. (original description)
Thrincia tuberosa var. oliverii DC. accepted as Leontodon tuberosus L. (original description)
Tragopogon cupanii DC. accepted as Tragopogon porrifolius subsp. cupanii (DC.) I.Richardson (original description)
Youngia mauritiana var. integrifolia (Cass.) DC. accepted as Youngia japonica (L.) DC. (original description)