Fr: laiteron glabre, laiteron des marécages
Provincial Status: Ni
Range: Europe; intr. in wNfld.
[=Sonchus uliginosus M.Bieb. (basionym)]
[=Sonchus arvensis L. forma glabrescens (Günther, Grab., & Wimm.) Kirp.]
[=Sonchus arvensis L. subsp. uliginosus (M.Bieb.) H.Neumayer 1930, nom. illeg. isonym., non (M.Bieb.) Nyman]
[=Sonchus arvensis L. var. glabrescens Günther, Grab., & Wimm.]
[=Sonchus arvensis L. var. laevipes Boiss.]
[=Sonchus arvensis L. var. uliginosus (M.Bieb.) Trautv.]
[=Sonchus ketzkhovelii Schchian]
[=Sonchus vulgaris Rouy var. decorus (Castagne) Rouy]
[=Sonchus wallichianus DC.]
[=Sonchus wightianus DC. subsp. wallichianus (DC.) Boulos]
[The first verified Nfld. report of Sonchus arvensis subsp. uliginosus is a 2014 collection (H) by T. Ahti from Rocky Harbour, GMNP, wNfld., but herbarium specimens of Sonchus arvensis from NL have not been annotated to subspecies, so more records may be discovered after a closer look at the herbarium record.]