Sonchus canadensis Linnaeus, Species Plantarum 2: 793. 1753.

"Habitat in Canada. Kalm." RCN: 5816.

Lectotype (Reveal & Turland in Jarvis & Turland in Taxon 47: 368. 1998): Kalm, Herb. Linn. No. 949.18 (LINN) .

Current name: Cicerbita alpina (L.) Wallr. ( Asteraceae).