Lucerne vs. Alfalfa: What's the Difference?

Alfalfa.

A southwest Asian perennial herb (Medicago sativa) in the pea family, having compound leaves with three leaflets and clusters of usually blue-violet flowers. It is widely cultivated as a pasture and hay crop.

(British) Alfalfa.

(uncountable) A plant, principally of Medicago sativa, grown as a pasture crop.

See Lucern, the plant.

(countable) A type or breed of this plant.

Important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop

The lucern (Medicago sativa), a leguminous plant having bluish purple cloverlike flowers, and cultivated for fodder; - so called in California, Texas, etc.

Important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop

Leguminous plant grown for hay or forage