| longroot smartweed | USDA PLANTS Symbol: POAME U.S. Nativity: Native Habit: Forbs/Herbs |
| Polygonum amphibium var. emersum Michx. |
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Taxonomic Rank: Magnoliopsida: Polygonales: Polygonaceae |
| Synonym(s): colored smartweed, devil's shoestring, swamp smartweed, tanweed |
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Flower(s); flowering stem. Joseph M. DiTomaso, University of California - Davis, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in its native habitat in a pond. Joseph M. DiTomaso, University of California - Davis, Bugwood.org Additional Resolutions & Image Usage |
| EDDMapS Distribution: This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org |
 State List This map identifies those states that list this species on their invasive species list or law. 
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| Invasive Listing Sources: |
