Introduced, warm-season, annual, prostrate to ascending herb with several stems to 30 cm long, often forming dense mats. Leaves are oblong, elliptic or obovate-oblong, mostly 3–8 mm long and usually 1–4 mm wide; margins are finely toothed to nearly entire; lamina often with a reddish brown spot in the middle. Flowerheads consist of cyathia with narrow white to pink, lobed appendages to 0.5 mm wide. Capsules are 1.3 mm long, with appressed hairs scattered over the 3 faces. Flowering is in summer. A native of NorthAmerica, It is a garden weed; often grows in cracks and paths.