Rorippa eustylis

Annual or ephemeral, to 30 cm high, decumbent to ascending, much-branched from base, glabrous or papillose. Leaves petiolate, 1–2-pinnately divided, to 9 cm long, lobes coarsely toothed. Sepals 2–2.5 mm long; petals 1.5–2 mm long, white; stamens 4. Fruit spreading, linear, straight, 10–25 mm long (excluding style), c. 1 mm wide; style less than 1.5 mm long; pedicels spreading, 1–5 mm long, seeds in 2 rows per locule, coat spongy, mucilaginous when wet. Flowers most of year.