Black Horehound - Ballota nigra
Medium to tall, often straggling, very aromatic plant. Flowers lilac 12 to 14 mm in dense whorls along the leafy stem. Calyx funnel shaped with triangular, finely-pointed 4 to 6.5 mm long teeth.
Woodland margins, hedgebanks and roadside verges.
June to September.
Mainly found in England except the north-west. Scarcer in Wales and Scotland.
Frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 247 of the 617 tetrads.
Leicestershire & Rutland Map
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