Achillea helvetica Schleich. ex Gaudin accepted as Achillea valesiaca Suter (original description)
Apargia autumnalis var. alpina Gaudin (original description)
Artemisia nana Gaudin accepted as Artemisia campestris subsp. borealis var. borealis (Pall.) M.Peck (original description)
Calendula undulata J.Gay ex Gaudin accepted as Calendula arvensis (Vaill.) L. (original description)
Carduus leptophyllus Gaudin accepted as Carduus nutans subsp. leiophyllus (Petrovič) Stoj. & Stef. (original description)
Carduus microcephalus Gaudin accepted as Carduus tenuiflorus Curtis (original description)
Carduus multiflorus Gaudin accepted as Carduus crispus subsp. multiflorus (Gaudin) Franco (original description)
Carduus tenuifolius Gaudin accepted as Carduus defloratus subsp. glaucus (Baumg.) Nyman (original description)
Cineraria tenuifolia Gaudin accepted as Tephroseris longifolia subsp. gaudinii (Gremli) Kerguélen (original description)
Cirsium hallerianum Gaudin accepted as Cirsium spinosissimum (L.) Scop. (original description)
Cirsium spathulatum (Moretti) Gaudin (original description)
Cirsium subalatum Gaudin accepted as Cirsium oleraceum (L.) Scop. (original description)
Cirsium subalpinum (original description)
Crepis recognita Gaudin (original description)
Erigeron angulosus Gaudin accepted as Erigeron acris subsp. angulosus (Gaudin) Vacc. (original description)
Hieracium cerinthoides Gaudin (original description)
Hieracium hybridum Gaudin (original description)
Hieracium obscurum Zollik. ex Gaudin (original description)
Hieracium picroides Gaudin (original description)
Margarita Gaudin (original description)
Margarita bellidiastrum (L.) Gaudin accepted as Bellidastrum michelii Cass. (original description)
Sclerophyllum Gaudin accepted as Crepis L. (original description)
Sclerophyllum pulchrum (L.) Gaudin accepted as Crepis pulchra L. (original description)
Scorzonera plantaginea Gaudin accepted as Scorzonera humilis L. (original description)
Senecio alpestris Gaudin accepted as Senecio ovatus subsp. alpestris (Gaudin) Herborg (original description)
Senecio scheuchzeri Gaudin (original description)
Thrincia taraxacoides (Vill.) Gaudin accepted as Leontodon saxatilis Lam. (original description)