| Scientific Name | Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman |
| Family | Asteraceae |
| Common Names | field sow-thistle, marsh sow thistle, wet ground sow thistle |
| Eastern Washington | European |
| Synonyms | Sonchus arvensis L. var. glabrescens Günther Sonchus uliginosus M. Bieb. |
| Conservation Status | |
| Notes |
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S edge of Valley, WA – Stevens Co. – 8/5/2009 
S edge of Valley, WA – Stevens Co. – 8/5/2009 
S edge of Valley, WA – Stevens Co. – 8/5/2009 
S edge of Valley, WA – Stevens Co. – 8/5/2009 
S edge of Valley, WA – Stevens Co. – 8/5/2009