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Polygonum bistorta (Bistort)
| Date | Action |
| Apr 18 2009 | toni (36069) added "Ornamental" to Plant Types |
| Apr 18 2009 | toni (36069) added "Snakeweed" to Common Names |
| Apr 18 2009 | toni (36069) added "Smartweed" to Common Names |
| Apr 18 2009 | toni (36069) added "Knotweed" to Common Names |
