Family: Lamiaceae
black horehound
[Ballota nigra subsp. ruderalis L., more...]
from USDA Plants website
Etymology: Ballota: Greek but of uncertain origin
Plants: perennial, 12"-32" tall forb, aromatic, hairless; stems square
Leaves: opposite, short-stalked, oval to round, coarse rounded teeth at the edges
Flowers: pink to white, 5-parted, 1/2" long, strongly 2-lipped with the upper lip hairy and not divided
; inflorescence 4-8 flowered, separated whorls from the upper leaf axils; blooms June-Sept.
Fruits: 1-seeded nutlet
Habitat: disturbed areas
Conservation Status: Introduced - adventive
Plants: perennial, 12"-32" tall forb, aromatic, hairless; stems square
Leaves: opposite, short-stalked, oval to round, coarse rounded teeth at the edges
Flowers: pink to white, 5-parted, 1/2" long, strongly 2-lipped with the upper lip hairy and not divided
; inflorescence 4-8 flowered, separated whorls from the upper leaf axils; blooms June-Sept.Fruits: 1-seeded nutlet
Habitat: disturbed areas
Conservation Status: Introduced - adventive
USDA Plants Database: Federal Distribution and detailed information including photos Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Emmet J. Judziewicz
Emmet J. Judziewicz
Botanical Illustration
Botanical Illustration
Thomas Schöpke
