Identification: Plant aquatic with flowers on a long, naked stalk above water arising from a group of filamentous leaves below the water line or in mud. Flower yellow, snapdragon-like, with a lower, large banner-shaped petal with a large, basal, oblong hump.Upper petal smaller, rooflike. Base of corolla with a hanging tubular spur. Leaves thin, filamentous, but not highly branched, but with scattered air bladders. Plant 1.5 to 12 inches in height.
Distribution: Newfoundland to Washington, southward in the east to Florida and Texas.
Habitat: Horned Bladderwort is found in bogs and along the margins of streams and ponds.
Flowering period: July to August.