Lactuca spinosa Lam. accepted as Launaea lanifera Pau (original description)
Leontodon crepidiformis Lam. accepted as Scorzoneroides pyrenaica (Gouan) Holub (original description)
Leontodon squamosus Lam. accepted as Scorzoneroides pyrenaica (Gouan) Holub (original description)
Sonchus goraeensis Lam. accepted as Launaea intybacea (Jacq.) Beauverd (original description)
Sonchus montanus Lam. accepted as Lactuca alpina (L.) A.Gray (original description)
Sonchus picroides Lam. (original description)
Sonchus racemosus Lam. accepted as Lactuca alpina (L.) A.Gray (original description)
Sonchus spicatus Lam. accepted as Lactuca biennis (Moench) Fernald (original description)
Sonchus tingitanus (L.) Lam. accepted as Reichardia tingitana (L.) Roth (original description)