Rorippa curvisiliqua
Brassicaceae
Western Yellow Cress
Stem with many branches from base, branches ascending. Basal leaves oblong to lance-shaped, entire to deeply pinnately divided, lobes entire or toothed, largest lobe at tip end; upper leaves few, small. Yellow flowers clustered at top of elongating stem, curved seedpods form below. Grows in wet soils at edge of rivers, streams, seeps, below 3000 ft.
- Rarity: Common
- Flowering Time: Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer
- Flower Form: Petals 4
- Life Cycle: Annual, Biennial
- Height: 4–20 inches
- Habitat: Bog/Fen/Wetland, Moist Riverbanks
- Found In: East Gorge, Mt. Rainier NP, N Cascades NP, Olympic NP, Siskiyous, Steens, Wallowas, West Gorge
- Native: Yes
