Leaves are cordate, ovate, or broadly ovate, their length is 5—15 cm. Inflorescens 1-3-flowered. Flowers are small, white-yellow, their diameter is 0.8—1 cm, stigmata are stellate. Ovary is stripe-hairy. Long hairs and short hairs are in longitudinal, alternating rows. Young ovary with white hairs, mature ovary with rusty hairs. A fruit is flat-spherical.