Hydrocotyle americana

Family (Traditional)Araliaceae
SpeciesHydrocotyle americana L.
Common NameAmerican marshpennywort
Growth Habitforb
Plant NotesLeaf Persistance: Deciduous; Habit: forb; Woody/Herbaceous: herbaceous; Terrestrial/Aquatic: Terrestrial;
Leaf Arrangement: Alternate; Basal; Simple/Compound: Simple; Leaf Complexity: ; 0; Leaf Type: Broadleaf;
Hypanthium: No; Perianth Absent: No; Fruit Color: ;
C value
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); TN[S1] KY[S1] (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
  • 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


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: McCreary (KY), Pulaski (KY), Greene (TN), Scott (TN), Van Buren (TN), Washington (TN)

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

Range of years during which specimens were collected: 1987 - 1987

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100210952 McCreary Kentucky Max E. Medley
Hydrocotyle americana
31234100746740 Pulaski Kentucky Martina Hines
Hydrocotyle americana
TENN-V-0159316 Washington Tennessee
Hydrocotyle americana
TENN-V-0159311 Greene Tennessee
Hydrocotyle americana
TENN-V-0159310 Greene Tennessee
Hydrocotyle americana
TENN-V-0159313 Scott Tennessee
Hydrocotyle americana
TENN-V-0159312 Greene Tennessee
Hydrocotyle americana
TENN-V-0159315 Van Buren Tennessee
Hydrocotyle americana
TENN-V-0159314 Van Buren Tennessee
Hydrocotyle americana
APSC0077552 McCreary Kentucky 05 Jul 1987 Max Medley
Hydrocotyle americana
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Plant Photos

Hydrocotyle americana - Joey Shaw
Hydrocotyle americana - Joey Shaw