Either of two species of small-leaved weeds, in the pink family. Common chickweed, or stitchwort (Stellaria media), is native to Europe but widely naturalized. It usually grows to 18 in. (45 cm) but is a low-growing and spreading annual weed in mowed lawns. Mouse-ear chickweed (Cerastium vulgatum), also from Europe, is a usually shorter, mat-forming, spreading perennial with many upright stems. It grows in lawns, pastures, and cultivated fields throughout temperate regions. Both species have inconspicuous but delicate white, star-shaped flowers.

This entry comes from Encyclopædia Britannica Concise.
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