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Floating Marsh-pennywort

Hydrocotyle ranunculoides

Found in stagnant to (less commonly) swiftly flowing waters of swamps pools, backwaters, blackwater streams, sometimes forming floating mats. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

43
Good

Native to West Virginia. How scores work Is it native here?

Profile 88%

Height
4–12 inches
Light
Partial shade, Full shade, Full sun
Soil moisture
Moist to standing water
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Bloom
April to July

Not yet recorded · Spread · Leaves

Recorded in 2 West Virginia counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 2

Swamps

Forested wetlands with standing water much of the year, such as cypress and gum swamps.

Streams, rivers and their banks

Flowing water and its banks, bars and rocky shoals.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

5CaterpillarsGenus host records with ranges including WV

Genus host records with ranges including WV · Hydrocotyle

  • Elophila obliteralisWaterlily Leafcutter Moth
  • Enigmogramma basigeraPink-Washed Looper Moth
  • Herpetogramma bipunctalisSouthern Beet Webworm, Two-Spotted Herpetogramma
  • Papilio polyxenesBlack Swallowtail, Celery Caterpillar, Fennel Worm, Desert Black Swallowtail, Parsnip Swallowtail
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
2BeesSoutheastern regional records

Southeastern regional records · Hydrocotyle

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
3BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Hydrocotyle

  • Agelaius phoeniceusRed-winged Blackbird
  • Gallinula galeataCommon Gallinule
  • Quiscalus majorBoat-tailed Grackle
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Araliaceae
Flower color
White, yellow or green
Growing sources and scope
Also known as

Floating Marsh Pennywort

Conservation status

West Virginia rankS2
Global rankG5
WV statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources