Ballota nigra
| Ballota nigra | |
|---|---|
| Ballota nigra subsp. nigra in Lower Austria | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Lamiaceae |
| Genus: | Ballota |
| Species: | B. nigra |
| Binomial name | |
| Ballota nigra | |
| Range of Ballota nigra. Green: native. Yellowish: introduced. | |
| Synonyms | |
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Ballota nigra, the black horehound, is a perennial herb in the family Lamiaceae. It is native to Europe, the Mediterranean region and east to central Asia. It is also naturalised in Argentina, New Zealand, and the eastern United States. It blooms in the Northern Hemisphere from May to August.