Annual herb to 4 tall, slender, erect, (weak in moister habitats), taprooted, usually glabrous, sometimes hairy. Leaves basal and cauline, pinnate, of 1–4 pairs of pinnae; pinnae variable from ovate to linear, the terminal pinna the largest, sometimes lobed. Sepals 1.5–2 mm long, sometimes pigmented with narrow white margins. Petals 2.5–3.5 mm long, white, rarely pink. Stamens 6. Style slender or obtuse, up to 1 mm long. Siliqua linear, 10–30 mm long, 0.7–1 mm wide, erect; pedicels slender, spreading (rarely to almost horizontal), 3–15 mm long. Seeds ovoid to oblong, 1–1.5 mm long, compressed, very narrowly winged.
Home