Dentella repens

Dentella repens, the creeping dentella, is a slender, prostrate herb that grows in low-lying areas, riverbanks, and clayey soils up to 350 m elevation. It has dichotomous branches that root at the nodes, opposite subsessile leaves, and interpetiolar stipules. The small white funnel-shaped flowers are solitary, axillary, and often borne in V-shaped forks of branches, with a hairy calyx and a two-celled ovary. Flowering and fruiting occur throughout the year, and the species is assessed as Least Concern (LC)....read more on Wikipedia.