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greater duckweed
Spirodela polyrrhiza
greater duckweed Arum/Calla-lily Family
Spirodela polyrrhiza Araceae
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common names
  greater duckweed
  common duckmeat
  common duckweed
accepted scientific name
  Spirodela polyrrhiza (L.) Schleid.
rules for finding collection records
  Spirodela polyrhiza (1290)
  Spirodela polyrrhiza (1797)
family name
  Araceae
Image Author: © John Hilty, Illinois Wildflowers
Image License: Author's permission
Image Source
Category: Wildflowers, Aquatic Plants
Flowers: No obvious petals
Petal colors: color
Plant Observed 3rd week of April thru 1st week of November

How Likely at this Location (54%)
Name Match (100%)
Plant Showiness (27%)
base map where plant found
mag select

Aquatic
Riparian
Wetland
Native Plant Status
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native Native
native Not Present

grid lines base