Ballota nigra

Definitions of Ballota nigra
1

n ill-smelling European herb with rugose leaves and whorls of dark purple flowers

Synonyms:
black archangel, black horehound, fetid horehound, stinking horehound
Type of:
herb, herbaceous plant
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

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