Lentibulariaceae
Bladderwort Family
2 genera
8 species
1 subspecies and varieties
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Pinguicula vulgariscommon butterwort
Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal, in America extending south to southwest Oregon, east to Montana and New York.
Habitat: Bogs and wet soil in the mountains.
Origin: Native
Flowers: July-August
Utricularia cornutahorned bladderwort
Origin: Native
Utricularia gibbahumped bladderwort, swollen-spurred bladderwort
Distribution: Known from west of the Cascades in Washington; British Columbia south to California; central and eastern North America.
Habitat: Emergent aquatic in lakes and ponds.
Origin: Native
Flowers: June-August
Utricularia inflataswollen bladderwort
Distribution: Known from west of the Cascades in Washington; Gulf Coast and southeastern U.S.
Habitat: Emergent aquatic in lakes and ponds.
Origin: Introduced from SE United States
Flowers: June-September
Utricularia intermediaflat-leaved bladderwort, mountain bladderwort
Distribution: Chiefly west of the Cascades in Washington; circumboreal; widely distributed throughout North America except in Central Plains, Gulf Coast, and Southeast.
Habitat: Shallow, standing or slowly mooving water.
Origin: Native
Flowers: July-August
Utricularia minorlesser bladderwort
Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Atlantic Coast north of Virginia.
Habitat: Shallow, standing or slowly moving water.
Origin: Native
Flowers: June-September
Utricularia ×ochroleucadwarf bladderwort
Distribution: Known only from Klickitat County in Washington, but likely occurring elsewhere; Alaska to California, east across northern half of North America to Greenland; Eurasia.
Habitat: Ponds and lakes in shallow to somewhat deeper waters.
Origin: Native
Flowers: June-September
Utricularia vulgaris
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal
Habitat: Lakes, ponds, swamps, and slow-moving streams.
Flowers: July-September
ssp. macrorhiza – bladderwort, common bladderwort, greater bladderwort