Black Medic

(Medicago lupulina)

Characteristics

Seedling	Leaves	Flowers	Fruit

Growing habit: Prostrate to ascending winter or summer annual

Root anatomy: Coarse branching taproot with legume nodules

Leaf anatomy: Trifoliate, pair of stipules at petiole base, leaflets obovate to oval-ovate, pubescent to nearly glabrous, somewhat dented along margin 

Reproduction: Solitary flowerheads with clusters of 15-50 yellow flowers

^{References: illinoiswildflowers.info}