Utricularia vulgaris ssp. macrorhiza
Lentibulariaceae
Common Bladderwort
Floating aquatic. Leaves divided many times into dense thread-like bristles. Small bladders along leaf margins trap small organisms when entrance hairs are triggered. Flowers 5–20, held on 1–12 in. stalks above water, yellow; 2 lips more or less equal in size, upper lip not lobed, lower lip with 3 shallow lobes; spur curved, shorter than lower lip. Grows in quiet waters. Forms ball-like, bristly winter buds. Circumboreal. Similar introduced U. inflata has a spoke-like float to support flower stalk.
- Rarity: Locally Common
- Flowering Time: Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer
- Flower Form: 5 lobes, 2 lips
- Life Cycle: Perennial
- Height: floating
- Habitat: Lake/Pond
- Found In: Olympic NP
- Native: Yes
- Latin Synonyms: Utricularia macrorhiza, Utricularia vulgaris
