Specimen Information

Hydrilla verticillata
Hydrilla verticillata
(hydrilla)
Plants
Exotic

Specimen ID1633923
GroupPlants
GenusHydrilla
Speciesverticillata
Common Namehydrilla
StateMA
CountyHampden
LocalityConnecticut River at Threemile Brook
Mapping AccuracyAccurate
HUC8 NameLower Connecticut
HUC8 Number01080205
HUC10 NameMill River-Connecticut River
HUC10 Number0108020501
HUC12 NamePecousic Brook-Connecticut River
HUC12 Number010802050102
Map
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Collection Day15
Collection Month9
Collection Year2018
Year AccuracyActual
Potential Pathwayreleased aquarium | dispersed
Statusfailed
Reference 1
Ref. Number:34016
Author:GZA GeoEnvironmental, Inc.
Date:2019
Title:Mapping of Invasive Aquatic Species in the Connecticut River with a focus on Hydrilla verticillata & Trapa natans
Publisher:Massachusetts Department of Conservation and Recreation Office of Water Resources, Lakes and Ponds Program
Pages:30 pp
CommentsVery high density in Sept. 2018 survey, but not found in June 2019. No tubers in core samples.
Record TypeLiterature
Earliest Recordcounty
VerifierMassachusetts Department of Conservation & Recreation
Freshwater/MarineFreshwater


Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2020]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [11/26/2020].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted. For queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.