Prostrate herb. Leaf simple, entire. Flowers solitary axillary. Calyx tube short, teeth subequal, acute. Corolla exserted. Vexillum suborbicular. Keel shortly beaked. Stamens monadelphous, tube split above, anthers dimorphous. Ovary sessile, 2-ovuled, style bent, stigma terminal. Fruit oblong, flat, 1-2-seeded.