Rorippa palustris
Brassicaceae
Marsh Yellowcress
Single erect stem, unbranched or branched from base. Leaves pointing upward from short petioles or sessile, toothed or deeply lobed. Yellow flowers atop branches; petals spoon-shaped. Erect seedpods oblong to nearly round on spreading stalks. Grows in wet spots below 6500 ft. throughout North America. Palustris, meaning "wet places," refers to where it grows.
- Rarity: Common
- Flowering Time: Early Summer
- Flower Form: Petals 4
- Life Cycle: Annual, Biennial, Perennial
- Height: 16–40 inches
- Habitat: Bog/Fen/Wetland, Meadow
- Found In: N Cascades NP, Olympic NP, Siskiyous, Steens, West Gorge
- Native: Yes
