5. Cakile edentula (Bigelow) Hooker, Fl. Bor.-Amer. 1: 59. 1830.
Bunias edentula Bigelow, Fl. Boston., 157. 1814
Annuals or, rarely, perennials, (compact, rarely sprawling) . Stems erect, or, rarely, prostrate, (much-branched), to 8 dm. Cauline leaves: blade ovate to spatulate, or (distal) oblanceolate (less lobed), (smaller distally), margins crenate, dentate, or sinuate (not pinnatifid). Racemes 1-2 dm, (congested); rachis straight. Fruiting pedicels 1.8-8 mm. Flowers: sepals 3.5-5 mm, lateral pair not saccate basally; petals white to pale lavender, (well-developed or reduced to bristles), 4.6-9.7 × 1.5-3 mm, claw not distinct. Fruits (4-angled or 8-ribbed), cylindrical, 12-29 × 3-9 mm; proximal segment terete, (5-10 mm); terminal segment fusiform to turbinate, (7-15 mm), (beak flattened), apex acute, blunt, or retuse. Seeds: cotyledons accumbent to, sometimes, incumbent.
Subspecies 2 (2 in the flora): North America, introduced in e Asia (Japan), Australia.