A perennial, slender, twining or prostrate, wiry shrub. Leaves simple, opposite,elliptic-oblong to linear-lanceolate, variegated with white above, silvery white andpubescent beneath. Flowers greenish purple, crowded in leaf opposed subsessilecymes. Fruits slender, cylindrical, tapering to a point at the apex. Seeds flattened,black, ovate-oblong, coma silvery white. (India)