Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Lemna trisulca L. image
Photographer: Robert W. Freckmann           

Kurt Stüber

Linda Ellis

Matthew L. Wagner

Paul Skawinski

Robert H. Read

Kurt Stüber
Family Lemnaceae
Lemna trisulca L.
forked duckweed, star duckweed
Lemna: from Greek limnos, "lake or swamp," referring to its aquatic habitat
trisulca: with three furrows
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: floating perennial aquatic, fronds can stay hooked together forming large mass; stems none; 1 root per frond
Fruit:winter buds from fronds that sink
Leaf:oar-shaped, flat with long stalk, 3 faint nerves, olive green
Habitat: wet; bays, ponds

More Information Natural Communities Herbarium Specimens
All Lemna list Google- Images or Text

Flora of North America (off site)
There are no synonyms for this taxon.

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