MEDICAGO, in botany, a genus of the diadelphia decandria class. The pod is compressed; and the carina of the corolla declines from the vexillum. There
are nine species, four of them natives of Britain, viz. The falcata, or yellow medic; the sativa, or lucern; the lupulina, or melilot trefoil; and the arabica, or heart-trefoil.