Coelanthum verticillatum Adamson

A prostrate annual with 1-4 stems, 6-10 cm long, branched in the upper parts only. Leaves in a basal rosette and in many whorls of 4-8 separated by internodes 1-2.5 cm long. Basal leaves petiolate, withering about flowering time, the blades ovate-spatulate or almost orbicular, 0.3-1.2 cm long, 0.2-0.8 cm wide, the petiole as long as the blade; stipules entire at the base, the upper part cut into coarse threads, about as long as the petiole. Stem leaves sessile, linear-oblong, 0.4-0.6 cm long, 0.1-0.2 cm wide, acute, usually aristate, stipules less than half as long as the leaves. Inflorescences terminal and from the upper nodes, on branches with 1-3 whorls of leaves. Cymes dichasial, leafless, with 3-8 flowers. Pedicels 3 mm long. Perianth about 3 mm long, almost cylindrical, the ascending lobes half as long as the tube. Fruit about as long as the tube.