Photographer: John Kohout
Spirodela polyrrhiza (L.) Schleid.
giant duckweed, greater duckweed
Spirodela: from Greek speira, "a cord," and delos, "evident," meaning "visible thread" and referring to the roots
polyrrhiza: polys for "many, frequent, much;" rhiza for "roots"
|Plant: ||floating perennial aquatic, clusters of several lobed leaves; stems none; 5-15 roots per leaf frond|
|Fruit:||reproduces by budding; new leaves staying attached to clump|
|Leaf:||irregular oval, green above, dark red below|
|Habitat: ||wet; ponds, lakes|