Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Alismatales
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Learn more about Water Lettuce from the Vascular Plants of North Carolina.
To see larger pictures, click or hover over the thumbnails.
Keith Bradley kab_p_stratiotes_70942
July Collier County FL
Fakahatchee Strand Preserve State Park
A whorl of male flowers tops a short stalk with a single female at its base, per Invasive Plants, Guide to Identification, Impacts and Control.
JK Marlow jkm160914_085
SE-EPPC Aquatic Plant ID Workshop
Leaves light green, thick, softly hairy, with distinct parallel ridges, per Invasive Plants, Guide to Identification, Impacts and Control.
COMPARE aquatic plants
Graves Lovell, Alabama Dept. of Conservation & Natural Resources, Bugwood.org bug_5400750
Looks like an open head of lettuce floating on the water, per Invasive Plants, Guide to Identification, Impacts and Control.
Floating aquatic (the roots floating); Forb
Original distribution unclear
Habitat: Stagnant or slow-moving waters of rivers, sometimes cultivated in ponds, where it persists for a while (presumably eventually eliminated by cold winters in the more northern parts of our area), per Weakley's Flora
NEW! Click here to see a map from Weakley's Flora of the Southeastern US showing range and abundance.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
This plant is causing problems in natural areas outside its native range, according to authorities such as:
- Alabama Invasive Plant Council, 2012
- SC Department of Natural Resources Aquatic Nuisance Species List, 2003
- SC List of Regulated Pest Plant Species, 2017
- US Fish & Wildlife Service
Leaves in rosettes connected by underwater stems
Inflorescence a spadix
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to Aquatic Plants of Alabama p64
- Invasive Plants, Guide to Identification, Impacts and Control p435