Plant foul-smelling. Leaves appearing at flowering, egg-shaped, deep green, elongate, to 1–2 ft. long and half as wide, overtaking the flower stalk, thick petiole graduating into thick midvein. Flowers yellow-green, numerous on stout spike partly surrounded by very large yellow bract. Grows in tree-shaded freshwater swamps, marshes, wet edges of streams, from coast to low elevations.
- Rarity: Locally Common
- Flowering Time: Early Spring
- Life Cycle: Perennial
- Height: 1--3 feet
- Habitat: Coastal, Bog/Fen/Wetland, Vernal Wet
- Found In: Alaska To Cal., West Gorge, Siskiyous, Mt. Rainier NP, Olympic NP, N Cascades NP
- Native: Yes