3797

Emergent aquatic (rooted); Forb
Perennial

Non-native: Eurasia & Africa
Documented growing wild in - - -

Rare

Look for it in farm ponds and other stagnant or slow-moving water, per Weakley's Flora

To see a detailed map, click here

INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

SC Department of Natural Resources Aquatic Nuisance Species List, 2003
SC List of Regulated Pest Plant Species, 2017
Tennessee Exotic Pest Plant Council, 2009
Virginia Department of Conservation and Recreation, 2014

 

LEAVES:
Submerged leaves finely divided, feather-like; floating leaves simple
Submerged leaves alternate; floating leaves in a rosette at water's surface
Petioles of floating leaves 2-6' long

FLOWER:
Summer/Fall
White (inconspicuous)
4 sepals
4 petals
Flowers borne in the center of the rosette of floating leaves

FRUIT:
Nut-like

 

TO LEARN MORE about this plant, look it up in a good book!

• Invasive Plants, Guide to Identification, Impacts and Control p419

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Myrtales

WEAKLEY'S FLORA (11/30/12):
Trapa natans   FAMILY Lythraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Trapa natans   FAMILY Trapaceae