What is "medicago lupulina"

Medic \Med"ic\, n. [L. medica, Gr. ? (sc. ?) a kind of clover introduced from Media, from ? Median.] (Bot.) A leguminous plant of the genus Medicago. The black medic is the Medicago lupulina; the purple medic, or lucern, is Medicago sativa.

Shamrock \Sham"rock\, n. [L. seamrog, seamar, trefoil, white clover, white honeysuckle; akin to Gael. seamrag.] (Bot.) A trifoliate plant used as a national emblem by the Irish. The legend is that St. Patrick once plucked a leaf of it for use in illustrating the doctrine of the trinity.

Note: The original plant was probably a kind of wood sorrel ( Oxalis Acetocella); but now the name is given to the white clover ( Trifolium repens), and the black medic ( Medicago lupulina).

Nonesuch \None"such`\, n. A person or thing of a sort that there is no other such; something extraordinary; a thing that has not its equal. It is given as a name to various objects, as to a choice variety of apple, a species of medic ( Medicago lupulina), a variety of pottery clay, etc.

Medicago lupulina, commonly known as black medick, nonesuch, or hop clover, is a familiar lawn plant belonging to the legume or clover family. Plants of the genus Medicago, or bur clovers, are closely related to the true clovers ( Trifolium) and sweet clover ( Melilotus). Like the true clovers, black medick has three leaflets and a small, yellow flower closely resembling those of the lesser trefoil. Black medick belongs to the same genus as alfalfa.