Blue-Flowered Rattlepod is an undershrub up to 40 cm
tall, with hairless branchlets and simple elliptic-lanceshaped leaves.
Leaves pointed tip, margin entire, base wedge-shaped, membranous,
hairless. Flowers are whitish blue, in racemes up to 5 cm long, at the
end branches. Sepals are 5, up to 1 cm long. Flowers are shaped like
pea-flowers, with white standard and blue wings. Wings equal calyx or
are slightly longer. Seed-pod is oblong, 10 seeded. Blue-Flowered Rattlepod
is found in S and SW India.