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Spirodela polyrrhiza
greater duckweed Arum/Calla-lily Family
Spirodela polyrrhiza Araceae
common names
  greater duckweed
  common duckmeat
  common duckweed
accepted scientific name
  Spirodela polyrrhiza (L.) Schleid.
rules for finding collection records
  Spirodela polyrhiza (789)
  Spirodela polyrrhiza (1670)
family name
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 end of October

How Likely at this Location (61%)
Name Match (100%)
Plant Showiness (27%)
base map where plant found
mag select

grid lines base