Common Name: prostrate knotweed, matgrass, doorweed, waygrassScientific Name: Polygonum aviculare L.Family Name: Polygonaceae - Smartweed or Buckwheat FamilyIdentification NotesLife Cycleintroduced annual, reproducing by seed Stems prostrate, bluish-green, mat forming, not rooting at nodes, nodes swollen, ocrea (papery or membranous sheath) present at nodes Leaves alternate, oblong to linear, bluish-green, bases narrow, short petioles Flowerspale green or white with pink tips, small, petals absent, sepals 5; axillary clusters