CHICKWEED (Stellaria media or Alsine media), an annual herb of the pink family (Caryophyllaceae) , called also satin flower, tongue-grass and winter weed. It is native to Europe and Asia and widely naturalized throughout North America and other regions. The plant has weak, reclining, much-branched stems, oval or ovate leaves about 2 in. long and small white ers. In mild climates it is found blooming throughout the year ; in colder regions, as in the eastern United States, it stands severe frosts and may be discovered blossoming under light snow in midwinter. Various other species of Stellaria and also of Arenaria and Veronica are known as chickweeds. Closely allied are the mouse-ear chickweeds astium sp.), various species of which are found in Great Britain, North America and other perate region s. Most plants called chickweed, though abundant as weeds, are usually not perni cious and are readily eradicated by cultivation.