Specimen Information

Hydrilla verticillata verticillata
Hydrilla verticillata verticillata
(whorled hydrilla)

Specimen ID1396659
Common Namewhorled hydrilla
LocalityWestern end of the C-113 canal and extending into the C-111 canal. Large dense mats between S-176 and S-177 water control structures
Mapping AccuracyAccurate
HUC8 NamePeace
HUC8 Number03100101
HUC10 NamePeace Creek Drainage Canal
HUC10 Number0310010102
HUC12 NameLake Hamilton
HUC12 Number031001010201
Collection Day8
Collection Month3
Collection Year2013
Year AccuracyActual
Potential Pathwaycanal
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
CommentsI did not take pictures of large clumps of hydrilla removed from lower unit of research vessel, however, samples were positively ID's as Hydrilla independently by myself and Lab manager of the Periphyton lab at FIU. Mats were so dense in regions of the C-111 canal (including center of canal) that we had to remove large clumps from the lower unit of research vessel every couple 100 meters. Estimates of infested areas were made using measurements in Google Earth (canal w x length)- infestation appeared throughout entire canal between S-176 and S-177 water control structures. Estimate does not include large dense mats infested in the western edge of C-113.; EDDMapS report
Record TypeLiterature
VerifierGregg Walker
Size9000 Sq Meters


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/27/2024].

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