Page author: David Giblin
Sonchus arvensis ssp. uliginosus
field sow-thistle, marsh sow-thistle, wet ground sow-thistle

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.

Habitat: Balds, prairies, forest edge, stream banks, roadsides, fields, and other disturbed open areas generally at low elevations, often where moist.

Flowers: July-October

Origin: Introduced from Europe

Conservation Status: Not of concern


[none provided]

Accepted Name:
Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman
Publication: Consp. Fl. Eur. 433. 1879.

Synonyms & Misapplications:
Sonchus arvensis L. var. glabrescens G√ľnther
Sonchus uliginosus M. Bieb. [HC]