Field Madder - Sherardia arvensis
Widespread annual plant regarded as a weed, growing mostly on waste ground, fields, roadsides and arable areas usually on calcareous soils with a creeping habit. Common in England and Wales rare otherwise. Slender prostrate stems to 30cm (12in) long of square section and branched, with oval narrow grey - green leaves covered in prickly hairs, four to six leaves in a radial arrangement along the stem. Pinkish flowers each about 3-5mm (0.15-0.25in) appearing May to October.