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Black Medic
Medicago lupulina

Black Medic, Medicago lupulinaBlack medic is a very common lawn weed in Southern California.  To keep a lawn free of it is a constant job.  Its main problem is that it is seasonal, it kills the grass under it, then dies leaving a brown spot.

Black Medic, Medicago lupulinaThe leaves have three leaflets, and at first glance look like clover.  The flowers are bright yellow, but tiny. They are shaped like pea flowers, and grow in a small spike. 

Black Medic, Medicago lupulinaThe fruit is a pod coiled and contains only one seed.  As the fruit matures it turns black (The source of the "black" in black medic.

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