Koenigia phytolaccifolia

Koenigia phytolaccifolia (synonym Aconogonon phytolaccifolium) is a species of flowering plant in the knotweed family, known by the common name poke knotweed.
Description.
"Koenigia phytolaccifolia" is a perennial herb up to tall. The lance-shaped or pointed oval leaves are 10 to 20 centimeters long and borne on petioles. The leaves have large stipules which form reddish ochrea up to long. The inflorescence is a long array of branching cluster of many white or greenish flowers. Each flower is about wide and has tiny protruding stamens tipped with yellow or pink anthers.
Distribution.
"Koenigia phytolaccifolia" is native to the western United States: California, Oregon, Washington, Nevada, Idaho, and Montana.