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BLACK HOREHOUND Ballota nigra (Lamiaceae) Height to 50cm. Straggly, bushy and hairy perennial that has a pungent and unpleasant smell when bruised. Grows on disturbed ground and roadside verges. FLOWERS are 12-18mm long and pinkish purple with a concave upper lip; borne in whorls with striking calyx teeth (Jun-Sep). FRUITS are nutlets. LEAVES are stalked and ovate or heart-shaped. STATUS-Widespread and locally common in England and Wales but scarce or absent elsewhere.