Hydrilla verticillata

ClassificationMonocots
FamilyHydrocharitaceae
Family (Traditional)Hydrocharitaceae
GenusHydrilla
SpeciesHydrilla verticillata (L. f.) Royle
Common Namewaterthyme
Growth Habitforb
Plant NotesTN-IPPC Rank: Established Threat
Leaf Persistance: Deciduous; Habit: forb; Woody/Herbaceous: herbaceous; Terrestrial/Aquatic: Aquatic;
Leaf Arrangement: Whorled; Simple/Compound: Simple;
Hypanthium: No; Perianth Absent: No; Fruit Color: ;
*Average C-Value: 0.0
C value N/A
StatusNot Native; AGCP (OBL), EMP (OBL) (NWPL); TN[SNA] KY[SNA] (State Rank); GNR (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • State Boundaries
  • Counties
  • Counties - Species Present
Ecoregions
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim

Synonyms

No synonyms exist for this species.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Trigg (KY), Anderson (TN), Benton (TN), Cumberland (TN), Hamilton (TN), Hardin (TN), Henry (TN), Houston (TN), Humphreys (TN), Knox (TN), Marion (TN), Monroe (TN), Polk (TN), Rhea (TN), Stewart (TN)

Herbaria represented by specimen data listed below: APSC, EKY, TENN, UCHT

Range of years during which specimens were collected: 2007 - 2013

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
TENN-V-0014493 Benton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014511 Marion Tennessee
TENN
Hydrilla verticillata
TENN-V-0014490 Anderson Tennessee
TENN
Hydrilla verticillata
TENN-V-0014501 Henry Tennessee
TENN
Hydrilla verticillata
TENN-V-0014512 Polk Tennessee
TENN
Hydrilla verticillata
TENN-V-0014508 Knox Tennessee
TENN
Hydrilla verticillata
TENN-V-0243471 Monroe Tennessee
TENN
Hydrilla verticillata
TENN-V-0014504 Humphreys Tennessee
TENN
Hydrilla verticillata
TENN-V-0014497 Hamilton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014507 Knox Tennessee
TENN
Hydrilla verticillata
TENN-V-0014506 Humphreys Tennessee
TENN
Hydrilla verticillata
TENN-V-0014502 Houston Tennessee
TENN
Hydrilla verticillata
TENN-V-0014495 Hamilton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014500 Henry Tennessee
TENN
Hydrilla verticillata
TENN-V-0014510 Marion Tennessee
TENN
Hydrilla verticillata
31234100094976 Trigg Kentucky 24 Jul 2007 Edward W. Chester
14715
EKY
Hydrilla verticillata
TENN-V-0014491 Benton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014498 Hamilton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014513 Rhea Tennessee
TENN
Hydrilla verticillata
TENN-V-0014492 Benton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014529 Trigg Kentucky
TENN
Hydrilla verticillata
TENN-V-0014514 Stewart Tennessee
TENN
Hydrilla verticillata
TENN-V-0014505 Humphreys Tennessee
TENN
Hydrilla verticillata
TENN-V-0014494 Benton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014499 Hardin Tennessee
TENN
Hydrilla verticillata
UCHT001555 Anderson Tennessee Wes James
UCHT
Hydrilla verticillata
UCHT006231 Polk Tennessee
UCHT
Hydrilla verticillata
APSC0038437 Stewart Tennessee
APSC
Hydrilla verticillata
APSC0038453 Humphreys Tennessee
APSC
Hydrilla verticillata
APSC0038450 Hamilton Tennessee
APSC
Hydrilla verticillata
TENN-V-0014496 Hamilton Tennessee
TENN
Hydrilla verticillata
TENN-V-0014516 Stewart Tennessee
TENN
Hydrilla verticillata
TENN-V-0014503 Houston Tennessee
TENN
Hydrilla verticillata
TENN-V-0014509 Marion Tennessee
TENN
Hydrilla verticillata
TENN-V-0014515 Stewart Tennessee
TENN
Hydrilla verticillata
APSC0038439 Polk Tennessee
APSC
Hydrilla verticillata
APSC0038454 Houston Tennessee
APSC
Hydrilla verticillata
APSC0038444 Henry Tennessee
APSC
Hydrilla verticillata
APSC0038435 Trigg Kentucky
APSC
Hydrilla verticillata
APSC0055352 Cumberland Tennessee 19 Jul 2013 Devin Rodgers
APSC
Hydrilla verticillata
APSC0038447 Hamilton Tennessee
APSC
Hydrilla verticillata
APSC0038448 Trigg Kentucky
APSC
Hydrilla verticillata
APSC0038445 Humphreys Tennessee
APSC
Hydrilla verticillata
APSC0038451 Benton Tennessee
APSC
Hydrilla verticillata
APSC0018485 Polk Tennessee
APSC
Hydrilla verticillata
APSC0038436 Stewart Tennessee
APSC
Hydrilla verticillata
APSC0038455 Humphreys Tennessee
APSC
Hydrilla verticillata
APSC0038452 Henry Tennessee
APSC
Hydrilla verticillata
APSC0038438 Stewart Tennessee
APSC
Hydrilla verticillata
APSC0045531 Benton Tennessee
APSC
Hydrilla verticillata
APSC0038441 Rhea Tennessee
APSC
Hydrilla verticillata
APSC0041441 Knox Tennessee
APSC
Hydrilla verticillata
APSC0038456 Houston Tennessee
APSC
Hydrilla verticillata
APSC0041440 Knox Tennessee
APSC
Hydrilla verticillata
APSC0064924 Cumberland Tennessee
APSC
Hydrilla verticillata
APSC0097117 Cumberland Tennessee
APSC
Hydrilla verticillata
APSC0015375 Monroe Tennessee
APSC
Hydrilla verticillata
TENN-V-0243553 Polk Tennessee
TENN
Hydrilla verticillata
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Plant Photos

Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Dwayne Estes
Hydrilla verticillata - Tara Littlefield
Hydrilla verticillata - Tara Littlefield
Hydrilla verticillata - Tara Littlefield
Hydrilla verticillata - Tara Littlefield