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DescriptionAnnual to perennial herbs. Leaves pinnate (in ours), with basal leaves in a rosette. Inner sepals slightly saccate. Flowers white (in ours) in an ebracteate raceme. Stamens 4-6. Fruit a flattened siliqua, dehiscing explosively, the inconspicuously veined valves coiling spirally from the base. Seeds in 1 series.