Hieracium foetidum Sibth. & Sm. (original description)
Leontodon serotinus Sibth. & Sm. (original description)
Scorzonera araneosa Sibth. & Sm. (original description)
Scorzonera crocifolia Sibth. & Sm. (original description)
Scorzonera graminifolia Sibth. & Sm. (original description)
Scorzonera pygmaea Sibth. & Sm. (original description)
Sonchus chondrilloides Sibth. & Sm. (original description)
Sonchus picroides Sibth. & Sm. (original description)
Tragopogon crocifolius Sibth. & Sm. (original description)