Specimen Information

Pistia stratiotes
Pistia stratiotes
(water lettuce)

Specimen ID1396545
Common Namewater lettuce
LocalityIn backwaters of Mississippi River, Pool 5, just downstream of Buffalo City, WI
Mapping AccuracyAccurate
HUC8 NameBuffalo-Whitewater
HUC8 Number07040003
HUC10 NameCity of Winona-Mississippi River
HUC10 Number0704000306
HUC12 NameBuffalo City-Mississippi River
HUC12 Number070400030604
Collection Day26
Collection Month7
Collection Year2012
Year AccuracyActual
Potential Pathwayunknown
Reference 1
Ref. Number:24369
Author:Center for Invasive Species and Ecosystem Health.
Title:EDDMapS: Early detection and distribution mapping system
Publisher:The University of Georgia
CommentsWater lettuce (along with water hyacinth) was found in a number of places upstream (within 5 miles) and downstream (within 1 mile)of this site in 2011 by WI DNR. FWS and WI DNR removed all plants that were found that year. This year an estimated 6000 water lettuce plants were at this site along with 4000 water hyacinth plants. We had the site sprayed twice and then removed remaining plants by hand. however the time from initial finding through second spraying was almost 8 weeks during which time plants could grow and multiply. In the future we will monitor sites earlier and remove by collecting. On August 15, 2012 Paul Skawinski, Scott Provost, and Sam Betterley collected a sample for a voucher specimen. The voucher was later submitted to the University of Wisconsin - Stevens Point Robert W. Freckmann Herbarium.; EDDMapS report
Record TypeLiterature
DisposalRobert W. Freckmann Herbarium
Museum Cat Number Record ID:163705
Size0.15 Acres


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Citation information: U.S. Geological Survey. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/27/2021].

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