An annual herb. It can be branching or straggling. It grows 30-70 cm high. The stems can be slightly woody at the base. There is a taproot. The leaves have 2 leaflets. The upper leaflets are 6-45 mm long by 2-14 mm wide. They are oval or sword shaped. There is a tip at the end. The flower standards are white, red or orange with red veins. The wings are yellow or pink. The fruit are pods 11-17 mm long. They have bristles.