Robert W. Freckmann Herbarium
University of Wisconsin - Stevens Point

Vascular Plants

Plants of Wisconsin

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Lemnaceae: Duckweed

Small free-floating plants with simple, thread-like or completely lacking roots. Leaves reduced to an oval or globe-like thallus or frond.
Flora of North America: Discussion, key to genera (opens new window)
Flower Formula:  Sepals 0; Petals 0 Glossary

Genus 
(Click for Taxon List)
WI Taxa
(map link)
Photo Genus Traits Google Searches
Lemna
duckweed
6 Photo of Lemna Single root present Images   Information
Spirodela
duckweed
1 Photo of Spirodela 2 or more roots present Images   Information
Wolffia
water-meal
3 Photo of Wolffia No roots. Images   Information

Vascular Plants

Plants of Wisconsin

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