Marsilea quadrifolia

ClassificationPteridophytes
FamilyMarsileaceae
Family (Traditional)Marsileaceae
GenusMarsilea
Species:Marsilea quadrifolia L.
Common NameEuropean Waterclover; Water Shamrock
Growth Habitfern
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Perennial; General Ecology: Aquatic; General Ecology: Mudflat; Growth Habit: fern; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Reproductive Phenology: November; Reproductive Phenology: December; Leaf Arrangement: basal; Leaf Complexity: compound; Leaf Dissection: 1; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Petiole Type: subpetiolate; Leaf Rank: N/A; Leaf Type: clover-like; Leaf Venation: one-veined; Leaf Venation: palmate; Leaf Venation: pinnate; Leaflet Margins: entire; Leaflet Number: 4; Anther Type: N/A; Carpel Number/Pistil: N/A; Fruit Complexity: N/A; Fruit Type: N/A; Fruit Wet/Dry: N/A; Hypanthium Present: No; Inflorescence Position: N/A; Inflorescence Types: N/A; Ovary Position: N/A; Overall Flower Symmetry: N/A; Ovules per Carpel: N/A; Perianth Present: No; Petal Fusion: N/A; Petal Number: N/A; Pistil Complexity: N/A; Pistil Number: N/A; Placentation Type: N/A; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: N/A; Sporangium Arrangement: upright panicle; Stamen Number: N/A; Tepal Number: N/A
C value 1
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); KY[SNA] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

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: Casey (KY), Fayette (KY), Shelby (TN)

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

Range of years during which specimens were collected: 1976 - 1980

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
31234100021011 Casey Kentucky 23 Jul 1978 Mary Lou Branson
49		 EKY
Marsilea quadrifolia
MDKY00000770 Fayette Kentucky
MDKY
Marsilea quadrifolia
TENN-V-0011669 Fayette Kentucky
TENN
Marsilea quadrifolia
UCHT000535 Tennessee 12 Nov 1980 Denesky
5180		 UCHT
Marsilea quadrifolia
MEM012579 Shelby Tennessee 26 Feb 1976 Elizabeth M. Browne, Edward T. Browne Jr.
76A1.2		 MEM
Marsilea quadrifolia
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