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Home > Fishing Alabama > Freshwater Fishing > Where to Fish in Alabama > Ponds > Pond Problems > Aquatic Plants > Field Guide to Aquatic Plants of Alabama > Floating
Giant DuckweedScientific Name: Spirodela polyrhiza
•Tiny floating plant of 2 to 4 joined fronds that are usually more than 1/4 - inch wide; most fronds have a tiny red dot on one end; fronds egg-shaped to nearly round.
•Two or more roots dangle beneath each leaf frond.
•Forms layer on surface that is at the will of the wind; may cover an entire pond if conditions are calm; heavy infestations can shade sunlight required for oxygen synthesis and fish productivity. Often found in association with small duckweed.