Specimen Information

Pistia stratiotes
Pistia stratiotes
(water lettuce)

Specimen ID1693532
Common Namewater lettuce
LocalityMorton Arboretum, East Branch of the DuPage River at Glen Oak Forest Preserve in Glen Ellyn. In the river between Illinois Route 53 and Roosevelt Road (Route 38). Dozens of plants of various sizeswere noted along the river in the areas where the current was not strong.
Mapping AccuracyAccurate
HUC8 NameDes Plaines
HUC8 Number07120004
HUC10 NameDu Page River
HUC10 Number0712000408
HUC12 NameHeadwaters East Branch Du Page River
HUC12 Number071200040803
Collection Day23
Collection Month9
Collection Year2002
Year AccuracyActual
Potential Pathwayunknown
Reference 1
Ref. Number:27378
Author:Cranberg, C., and R. Keller
Title:Illinois Database of Aquatic Non-native Species
Publisher:School of Environmental Sustainability, Loyola University Chicago
Reference 2
Ref. Number:18446
Author:Morton Arboretum
Title:Morton Arboretum Herbarium (MOR)
Publisher:SEINet Data Portal
CommentsDozens of plants of various sizes. Several plants were also observed in the East Branch of the DuPage River at the Churchill Woods Forest Preserve, south of St. Charles Road on October 2, 2002. Here they also associated with Lemna minor.
Record TypeSpecimen
Museum Cat Number0035597MOR
VerifierGreat Lakes Invasives Network


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Citation information: U.S. Geological Survey. [2023]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/7/2023].

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