Sulasi is an erect and herbaceous branched plant, 1 meter high or less. Stems and younger parts are covered with spreading hairs. Leaves are oblong-ovate and 2 to 4.5 centimeters long, with pointed or blunt tips, and somewhat toothed margins. Flowers are pink or purplish, about 7 millimeters long, borne on racemes 5 to 14 centimeters long. Calyx at the time of flowering is about 3 millimeters long and somewhat larger in fruit; the two lower teeth are long-awned, the upper one broadly-oblong, and the lateral ones very broad. Corolla is very small, scarcely longer than the calyx. Nutlets are somewhat rounded or broadly oblong, slightly compressed and nearly smooth.