grows more sideways than upwards, forming extensive mats. Leaves are densely hairy, especially underneath, as are the stems and calyces. The plant blooms over a long period, though only a small number of flowers are open at any one time. Often a single plant may have buds, flowers and seeds.
Flowers are supported by a green or purple calyx, split into two lobes about equal in length, and divided at the tip. Petals are fairly uniformly colored bluish purple, except the banner which has a pure white patch at the center. The keel petal is largely hidden by the wing petals. Leaves and leaflets are may be angled upwards. Stems and leaf margins often have a reddish tint.