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ANNUAL WALL-ROCKET Diplotaxis muralis (Brassicaceae) Height to 60cm. Branched annual with an extremely unpleasant smell when crushed. Found on waste ground and in arable fields, mainly on sandy soils. FLOWERS are 10-15mm across with 4 yellow petals (May-Sep). FRUITS are cylindrical with 2 rows of seeds. LEAVES are pinnately lobed and mainly basal. STATUS-Widespread but local, mainly in the S.