Submitter does not have a specimen
Floating on water. Potentially other aquatic plant among it but not sure.
Sept. 24, 2020, 9:48 a.m.
USGS fact sheet on Water lettuce
In the fountain at Bohemia Park. Overflow may drain directly to storm drain i.e. river.
Mrs. Lindsey Wise Oregon Biodiversity Information Center, inr.oregonstate.edu/orbicOregon iMapInvasivesInstitute for Natural ResourcesPortland State University
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