| Name | Sonchus arvensis subsp. uliginosa (M. Bieberstein) Nyman |
| Authorship | (M. Bieb.) Nyman |
| Rank | Subspecies |
| Placed in | Sonchus arvensis Linnaeus |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Sonchus arvensis subsp. uliginosa (M. Bieberstein) Nyman |
| Identification made in | 2012 (1), 2013 (2) |
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