Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across much of North America to the Atlantic Coast; also in Eurasia.
Habitat: In standing or slow-moving fresh water.
Flowers: June-October
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Flies
Floating aquatic perennials forming colonies, lanceolate-ovate body 1-4 mm long, flat and barely gibbous, margins entire, often reddish below with coloring beginning where root is attached, sometimes red-spotted on upper surface; turions sometimes present; stipes small, white, usually decaying; roots less than 15 cm, tip generally rounded, sheath not winged.
None
Plants rarely found in flower, reproducing vegetatively; flowers 1-2 per body, surrounded by utricular scale with narrow opening at apex; stamens 2, 4-chambered, ovaries 1, containing 1 ovule, tapering into style, stigma funnel-shaped.
Fruit a follicle, 0.5-0.6 mm, not winged, opening by bursting; seeds 1-5, with 30-60 indistinct ribs.
Publication: Aquatic Botany. 1: 355, fig. 4g–h. 1975.
PNW Herbaria: Specimen records of Lemna turionifera in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Lemna turionifera checklist entry.
OregonFlora: Lemna turionifera information.
E-Flora BC: Lemna turionifera atlas page.
CalPhotos: Lemna turionifera photos.
USDA Plants: Lemna turionifera information.
