(Sida corrugata)
Prostrate to decumbent perennial, developing a thick root stock, spreading to 30 cm diam., glabrescent or tomentose. Leaves circular to ovate, 1�3 cm long. Flowers 1 or 2, peduncles 5�25 mm long. Calyx 3�4 mm long, with broad triangular lobes, acute to acuminate at apex. Corolla 4�7 mm long. Fruit depressed-globose, 5 mm diam.; mericarps 6�10, grooved at summit, wrinkled on back.