Also sometimes called black alfalfa .... it's not black, but it makes a single, black, seed. It's in the alfalfa family I guess, has the 3-leaf pattern. It doesn't get nearly as big though. It's a ground-hugging, spread-out plant. Well, we had a healthy growth of it on the side of the driveway, so I went out with scissors and a box and pulled it up and cut it up for my hens. I noticed, a lot of earthworms around the roots! So those went in the box too. So, my hens got worms, and the black medic, which it turns out they like quite a bit, ate it all up! So if you have this plant/weed around, it's a good chicken treat. And if you need worms for fishing, look under this plant.