130624 BLACK MUSTARD Brassica nigra (Brassicaceae) Height to 2m
Robust, greyish annual. Often found on sea cliffs, riverbanks and waste ground. FLOWERS are 12-15mm across with 4 yellow petals (May-Aug). FRUITS are flattened and pressed close to stem. LEAVES are stalked, the lower ones pinnately lobed and bristly. STATUS-Locally common in England and Wales; rather scarce elsewhere.