Specimen Information

Egeria densa
Egeria densa
(Brazilian waterweed)
Plants
Exotic

Specimen ID1257341
GroupPlants
GenusEgeria
Speciesdensa
Common NameBrazilian waterweed
StateWA
CountyJefferson
LocalityLeland Lake
Mapping AccuracyAccurate
HUC8 NameHood Canal
HUC8 Number17110018
HUC10 NameLittle Quillcene River-Frontal Hood Canal
HUC10 Number1711001807
HUC12 NameLittle Quilcene River
HUC12 Number171100180702
Map
+
Collection Day2
Collection Month8
Collection Year2008
Year AccuracyActual
Potential Pathwayunknown
Statusunknown
Reference 1
Ref. Number:28080
Author:Environmental Assessment Program.
Date:2018
Title:Washington State Lakes Environmental Data Version 1.0
Publisher:Washington State Department of Ecology
Commentsonly saw in two limited locations (see map). Have not seen it in subsequent years, though no control methods were used. Presumed eradicated.; Weather overcast, light breeze to calm. Saw bald eagle, freshwater sponges, rough skin newt, bryozoans, mystery snails (collected shell). Did careful inventory for egeria (> 5 hours), only found it in two areas. Visibility was compromised by glare so collected many samples with the rake. Signs at launch areas warning of toxic algae bloom, saw dieing scum on north shore. Water level seems normal.
Record TypeLiterature
Freshwater/MarineFreshwater


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/18/2024].

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