Vallisneria americana

ClassificationMonocots
FamilyHydrocharitaceae
Family (Traditional)Hydrocharitaceae
GenusVallisneria
Species:Vallisneria americana Michx.
Common NameAmerican Eelgrass; Vallisneria; Tape Grass
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: UCR; Duration: Perennial; General Ecology: Aquatic; Growth Habit: forb; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: grass-like; Leaf Type: sword-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: White; Carpel Number/Pistil: 0; Carpel Number/Pistil: 1; Carpel Number/Pistil: 2; Carpel Number/Pistil: 3; Carpel Number/Pistil: 4; Carpel Number/Pistil: 5; Carpel Number/Pistil: 6; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Overall Flower Symmetry: Actinomorphic; Sporangium Arrangement: N/A
C value 10
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); TN[SNR] KY[S2S3] (State Rank); G5 (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

SynonymFull Citation
Vallisneria asiatica Vallisneria asiatica Michx.
Vallisneria neotropicalis Vallisneria neotropicalis Victorin
Vallisneria spiralis Vallisneria spiralis auct. non L.
Vallisneria spiralis var. americana Vallisneria spiralis var. americana (Michx.) Torr.
Vallisneria spiralis var. asiatica Vallisneria spiralis var. asiatica (Michx.) Torr.

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: Bracken (KY), Clay (KY), Jefferson (KY), Lewis (KY), Lyon (KY), Rowan (KY), Wayne (KY), Hamilton (TN), Hancock (TN), Hawkins (TN), Humphreys (TN), Lewis (TN), Marion (TN), Sullivan (TN)

Herbaria represented by specimen data listed below: APSC, BEREA, EKY, ETSU, KNK, MDKY, TENN, UCHT

Range of years during which specimens were collected: 1999 - 2019

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100733367 Clay Kentucky Ron Cicerello
EKY
Vallisneria americana
31234100095437 Lyon Kentucky Edward W. Chester
EKY
Vallisneria americana
BEREA015193 Lewis Kentucky
BEREA
Vallisneria americana
BEREA015194 Lewis Kentucky
BEREA
Vallisneria americana
31973000014136 Bracken Kentucky
KNK
Vallisneria americana
MDKY00005341 Wayne Kentucky
MDKY
Vallisneria americana
TENN-V-0014621 Sullivan Tennessee
TENN
Vallisneria americana
TENN-V-0014616 Humphreys Tennessee
TENN
Vallisneria americana
TENN-V-0014613 Hamilton Tennessee
TENN
Vallisneria americana
TENN-V-0014614 Hancock Tennessee
TENN
Vallisneria americana
UCHT001571 Marion Tennessee 29 Jun 1999 John Beck
3668
UCHT
Vallisneria americana
APSC0038503 Lyon Kentucky
APSC
Vallisneria americana
N/A Hawkins Tennessee 03 May 2019 Frosty Levy, Elaine Walker
ETSU
Vallisneria americana
ETSU026515 Hawkins Tennessee 20 Jul 2019 Frosty Levy, Elaine Walker
19680
ETSU
Vallisneria americana
N/A Hawkins Tennessee 20 Jul 2019 Frosty Levy, Elaine Walker
ETSU
Vallisneria americana
BEREA015192 Lewis Kentucky
BEREA
Vallisneria americana
MDKY00005340 Rowan Kentucky
MDKY
Vallisneria americana
TENN-V-0014618 Marion Tennessee
TENN
Vallisneria americana
TENN-V-0014620 Sullivan Tennessee
TENN
Vallisneria americana
TENN-V-0014619 Marion Tennessee
TENN
Vallisneria americana
TENN-V-0014615 Hawkins Tennessee
TENN
Vallisneria americana
UCHT001572 Marion Tennessee 29 Jun 1999 John Beck
3670
UCHT
Vallisneria americana
UCHT001573 Hamilton Tennessee
UCHT
Vallisneria americana
APSC0088517 Jefferson Kentucky
APSC
Vallisneria americana
APSC0038505 Marion Tennessee
APSC
Vallisneria americana
APSC0117051 Jefferson Kentucky
APSC
Vallisneria americana
APSC0038502 Lyon Kentucky
APSC
Vallisneria americana
APSC0088520 Jefferson Kentucky
APSC
Vallisneria americana
APSC0117055 Jefferson Kentucky
APSC
Vallisneria americana
TENN-V-0014617 Lewis Tennessee
TENN
Vallisneria americana
ETSU026027 Hawkins Tennessee 03 May 2019 Frosty Levy, Elaine Walker
19190
ETSU
Vallisneria americana
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Plant Photos

Vallisneria americana - Dwayne Estes
Vallisneria americana - Dwayne Estes
Vallisneria americana - Dwayne Estes
Vallisneria americana - Dwayne Estes
Vallisneria americana - Dwayne Estes
Vallisneria americana - Dwayne Estes
Vallisneria americana - Milo Pyne
Vallisneria americana - Milo Pyne
Vallisneria americana - Milo Pyne
Vallisneria americana - Milo Pyne