A cultivated clover grown as livestock fodder and as green manure. It self-seeds in open places, next to vineyards, or country roads. Many plants in the Fabaceae family have a relationship with bacteria in the soil. The bacteria take the nitrogen that exists in the air pockets in the soil and feed it through the roots to the plant; in return the plant gives carbohydrates to the bacteria. In green manure the crop is turned under, in doing so, fertilising the soil with nitrogen.
Flowers in 5-40 flowered racemes.
Trifoliate with three leaflets, Elliptic oval leaf, Lanceolate leaf is lance-shaped: long and widest in the middle. Three leaflets, oval to long, pointed. Terminal leaflet is stalked. Tip of the leaves have toothed margins.
Pod: in a cluster, each pod curled into a circle, with a hole in the middle, 5-6 mm.