Andryala malacitana Haens. ex Willk. accepted as Andryala laxiflora DC. (original description)
Artemisia assoana Willk. accepted as Artemisia pedemontana Balb. (original description)
Centaurea isernii Willk. accepted as Centaurea hanryi subsp. isernii (Willk.) Smythies (original description)
Centaurea langeana Willk. accepted as Centaurea aristata subsp. langeana (Willk.) Dostál (original description)
Cineraria alpestris Willk. accepted as Tephroseris longifolia subsp. brachychaeta Greuter (original description)
Cirsium bourgaeanum Willk. (original description)
Cirsium gregarium Willk. accepted as Cirsium acaulon subsp. gregarium (DC.) Talavera (original description)
Crepis amplexifolia (Godr.) Willk. (original description)
Evax micropodioides (Willk.) Willk. accepted as Filago crocidion (Pomel) Chrtek & Holub (original description)
Hedypnois pygmaea Willk. accepted as Hedypnois rhagadioloides (L.) F.W.Schmidt (original description)
Hieracium carpetanum Willk. (original description)
Hyoseris scabra Pourr. (original description)
Leontodon bourgaeanus Willk. (original description)
Leucanthemum crassifolium Lange (original description)
Lyonetia Willk. (original description)
Lyonnetia anthemoides (L.) Willk. accepted as Porophyllum leiocarpum (Urb.) Rydb. (original description)
Medicasia Willk. (original description)
Perideraea aurea (Loefl.) Willk. accepted as Matricaria aurea (Loefl.) Sch.Bip. (original description)
Picridium gaditanum Willk. accepted as Reichardia gaditana (Willk.) Samp. (original description)
Pyrethrum hispanicum Willk. accepted as Leucanthemopsis pulverulenta (Lag.) Heywood (original description)
Scorzonera eriocarpa Willk. (original description)
Senecio crucaefolius Willk. (original description)
Senecio eriopus Willk. (original description)
Senecio jacobaeoides Willk. accepted as Jacobaea vulgaris Gaertn. (original description)
Solidago macrorrhiza Lange accepted as Solidago virgaurea subsp. macrorrhiza (Lange) Nyman (original description)
Sonchus hieracioides Willk. accepted as Sonchus maritimus L. (original description)
Sonchus pustulatus Willk. (original description)
Taraxacum taraxacoides (Hoppe & Hornsch.) Willk. (original description)