– watershield
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to much of Canada and the eastern United States.
Habitat: Shallow ponds and sluggish streams.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
– fanwort
Distribution: Occurring west of the Cascades crest, where only known from Clark County. southwestern Washington to California; native to southeastern and eastern U.S.
Habitat: Ponds and irrigation ditches.
Origin: Introduced from southeastern and eastern U.S.
Flowers: July-August
Growth Duration: Perennial