Annual herbs, sparsely branched, erect or suberect, clothed with minute branched hairs. Leaves ovate-oblong or broadly elliptic, shortly stalked to sessile or subsessile, dentate. Flowers small, solitary and axillary, white; pedicel filiform, becoming deflexed in fruit. Sepals equal, not saccate at base. Petals slightly longer than sepals, spathulate. Stamens 6; filaments not appendaged; anthers minute subquadrate. Lateral nectar glands in pairs, minute sometimes obscure; middle glands absent. Ovary suborbicular, compressed, bilocular, 2-ovuled; style short with retuse stigma. Siliculae suborbicular, compressed, bilocular, dehiscent; valves scabrous or asperous with simple or glochidiatous rough hairs; style conical; septum membranous, broad, not veined, seed 1 in each locule, large, compressed, suborbicular, narrowly winged; radicle accumbent.