Taxon:Wolffia columbiana H. Karst. Family: Araceae
Berg, Matthew S. 2008-026
Verbatim Date: 2008-7-18
United States, Wisconsin, Barron, Lower Turtle Lake
45.37928° N, 92.06736° W; T33N R14W sec02
In sheltered areas. Common assoc.: (Nymphaea odorata) white water lily, (Spirodela polyrhiza) large duckweed, (Potamogeton zosteriformis) flat-stem pondweed.
Located floating at or just under the surface in sheltered areas. Only specimens were found in a stagnant bay in the far southeast corner of the lake interspersed between the lilypads and along shore.