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Pronunciation: pol-IG-on-um av-ik-yoo-LARE-ee de-PRES-um
Common name: Common knotweed
Family: Polygonaceae (Buckwheat)
Habitat: Disturbed and waste places throughout California to 7500', introduced from Europe
Blooming period: May to November
Name derivations: 1) Polygonum 2) aviculare 3) depressum
Formerly Polygonum arenastrum