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Koenigia davisiae (Davis' knotweed)
Life (root) » Plantae (plants) » Tracheophyta (Vascular Plants) » Magnoliopsida (Dicots) » Caryophyllales (pinks, cactuses, and allies) » Polygonaceae (knotweed family) » Polygonoideae » Persicarieae » Koenigiinae » Koenigia » Koenigia davisiae (Davis' knotweed)

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Davis' knotweed
Koenigia davisiae
Location: Mount St.Helens, Skamania County, WA
Photo Date: 9/7/2011
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