Plants : LamiaceaeFerns and Flowering Plants

Ballota nigra L.

Black Horehound

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Ballota nigra

Description: A rare weed of roadsides and waste ground with very few post-war records from Northern Ireland. It is a strong-smelling untidy plant with pinkish-purple flowers.

All names: Ballota nigra L.

Distribution Map from NBN: Ballota nigra at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Ballota nigra at iNaturalist World Species Observations database.

 Hackney, P., 2026. Ballota nigra. L.. [In] Flora of Northern Ireland.
https://habitas.org/flora/species.php?item=4238. Accessed on 2026-11-02.