Blooms: June-October
Habit: herb
Duration: annual,biennial,perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Widely distributed throughout Washington; common throughout North America.
Habitat: Wet ground and low elevations.

Species Description:

General: Annual or biennial herbs, glabrous to stiff-hairy, the stems simple to freely-branched, erect, 3-10 dm. tall.
Leaves: Leaves alternate, ovate-oblong to oblong-obovate, up to 17 cm. long, all pinnatifid or the upper merely toothed, slightly auriculate.
Flowers: Inflorescence of bractless racemes; pedicles 4-12 mm. long, equaling the fruits; sepals 4, about 1.5 mm. long, not saccate at the base, falling off shortly after flowering; petals 4, light yellow, about 1 mm. long; stamens 6; style 0.5-1 mm. long.
Fruits: Siliques ovate to oblong, spreading to ascending, mostly straight, 3-8 mm. long and 2-3 mm. broad; seeds in 2 series.

Rorippa palustris (L.) Besser

Treated in Flora of the PNW as:

PNW Herbaria Specimens: View list of Rorippa palustris specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Rorippa palustris specimens in the WTU Herbarium database.

Washington Flora Checklist: Rorippa palustris treatment.

E-Flora BC: Rorippa palustris atlas page.

CalPhotos: Rorippa palustris images.

USDA Plants Database: Rorippa palustris.