Water-Lily Family
2 genera
3 species
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Nuphar polysepalayellow pond lily, spatterdock
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Northwest Territory, Alberta, and the Rocky Mountain States.
Habitat: Ponds, shallow lakes, oxbows, and sluggish streams from low to middle elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Nymphaea odorataAmerican water-lily, fragrant water-lily
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to central and eastern North America, where native.
Habitat: Lowland ponds and lakes.
Origin: Introduced from central and eastern North America
Flowers: June-October
Growth Duration: Perennial
Nymphaea tetragonapygmy water-lily
Distribution: Known historically in Washington from west of the Cascades crest in Whatcom County; Alaska to British Columbia, east to Northwest Territories, Alberta, Montana, and Manitoba.
Habitat: Pond and lake margins, where emergent.
Origin: Native
Flowers: June-August
Growth Duration: Perennial