Dichondra repens, commonly known as kidney weed,[2] Mercury Bay weed,[3] tom thumb,[4] or yilibili in the Dharawal language,[5] is a species of flowering plant in the family Convolvulaceae and is native to Australia, New Zealand, and the Indian Ocean islands, Mauritius, Réunion and Rodrigues.

[11] Kidney weed is widespread in all Australian States and New Zealand, and occurs on Mauritius, Réunion and Rodrigues in the Indian Ocean.

[1] It grows in forest, woodland and grassland on clay or clay-based soils that are medium to high in nutrients, and is a weed of lawns.

Associated species in New South Wales are river peppermint (Eucalyptus elata), thin-leaved stringybark (E. eugenioides), woollybutt (E. longifolia) and snow-in-summer (Melaleuca linariifolia).

[13] Among these are acylated resin glycosides which synergize with antibiotics to reverse bacterial multidrug resistance (MDR).