Plant · GBIF taxon 3034614
manyflower marshpennywort
Hydrocotyle umbellataAlso known as Dollarweed, Water Pennywort, Marsh Pennywort, Acariçoba
Manyflower marshpennywort spreads along wet shores and shallow waters using creeping rhizomes, forming bright green carpets of umbrella-like, circular leaves. Small white flowers bloom in dense, single-tiered umbels raised on long stalks above the floating or emergent foliage. While widespread across warmer parts of the Americas, peripheral northern populations rely heavily on protected shoreline wetlands.
AquaticPerennialWildflower
1 / 7—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Autotrophic (Photosynthetic)
Predators
- Waterfowl
- Herbivorous Fish
- Muskrats
ThreatsShoreline development, water level manipulation, aquatic weed control
HabitatsWetlands, lake margins, marshes, ponds, wet sandy shores
Life spanPerennial
Size / weightNot available
Classification
- OrderApiales
- FamilyAraliaceae
- GenusHydrocotyle
- SpeciesHydrocotyle umbellata
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
- What to notice
- Recognize the distinct central leaf attachment and umbrella-like umbels on sandy shores.
- Support conservation
- Stay on designated boardwalks and avoid disturbing sensitive lake margins.
Responsible observation
- Spotting: Look along wet, sandy pond edges or shallow water margins where creeping stems form dense mats.
- Identification: Examine the round, coin-shaped leaves with the stalk attached directly to the undersurface center.
- Conservation: Avoid trampling shoreline vegetation near pristine lakes and wetland preserves.
Look-Alike no rights reserved, uploaded by 葉子 · cc0
Close Relative (c) Tom Scavo, some rights reserved (CC BY) · cc-by
Image unavailableClose Relative 
Close Relative Forest & Kim Starr / CC BY 3.0 · cc-by
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