| rough mannagrass | USDA PLANTS Symbol: GLMA3 U.S. Nativity: Exotic Habit: Aquatic Plants Grass or Grasslike |
| Glyceria maxima (Hartman) Holmb. |
Jump to: Images | Distribution Maps | Sources
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Taxonomic Rank: Liliopsida: Cyperales: Poaceae |
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| Selected Images from Invasive.org | View All Images at Invasive.org |
![]() Flower(s); Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
![]() Feature(s); Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
![]() Feature(s); Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
![]() Feature(s); Leslie J. Mehrhoff, University of Connecticut, 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: |
| Connecticut Invasive Plant Working Group |
| Pacific Northwest Exotic Pest Plant Council, 1998 |
| Rhode Island Natural History Survey |















