WISCONSIN BOTANICAL INFORMATION SYSTEM
Wisconsin State Herbarium

Wisflora - Vascular Plant Species

University of  Wisconsin - Madison 

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Family: Lamiaceae
  Genus: Ballota

    Ballota nigra L.+
        black horehound
             Ballota nigra L. subsp. ruderalis
             Ballota nigra L. var. nigra
             Ballota ruderalis Sw.

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