Nymphoides peltata S.G.Gmel.
Common names: Russ: Bolototsvetnik shchitolistny; Ukr: Plavun shchitolystny
Taxonomic descriptions: Perennial water herb with long creeping rootstock, holding firm on the bottom of water body. Leaves are round-hearted, floating on the water surface. Flowers are yellow with deeply divided corolla. Its fruit is an ovate pod.
World level: NE
Black Sea Regional level: LR
Subregion level: LR (Ukraine)
Habitats type, Critical habitats, Limiting factors: Shallows (30-50 cm depth) with flowing or slow waters with sandy and silty bottom sediments.
Biology: Flowering during VI-VIII. Fruit-bearing - VIII-IX. Reproducing by seeds and vegetatively.
Population trends: Populations are numerous, but decreasing.
Threats: Drying, pollution and salting of the reservoirs.
Conservation measures taken: This species has been entered in the Red Data Books of Ukraine (1996) and Bulgaria (1984). It is protected in the Danube delta (Ukraine and Romania).
Conservation measures proposed: To create protected zones in places where it occurs.
Compiled by: S.Dyatlov, T.Vasilieva