Acanthium onopordon Gueldenst. accepted as Onopordum acanthium L. (original description)
Centaurea lutea Gueldenst. (original description)
Inula hirsuta Gueldenst. (original description)
Inula salicifolia Gueldenst. (original description)
Parthenium matricaria Gueldenst. accepted as Tanacetum parthenium (L.) Sch.Bip. (original description)
Senecio sylvaticus Gueldenst. (original description)
Sonchus amplexicaulis Gueldenst. (original description)
Taraxacum leontodon Gueldenst. (original description)
Tragopogon vulgaris Gueldenst. (original description)