Annual herb of the Potato family -Solanaceae- up to 60 cm. Leaves ovate or rhombic, undivided or slightly toothed, short-stalked. Flowers in stalked cymes, white till 1 cm wide. Very conspicuous anthers, forming a yellow cone. The fruit is a berry, 1 cm. wide, green or red. In cultivated lands, rubbish or near the walls.