Polygonum nuttallii

Polygonum nuttallii is a North American species of flowering plant in the buckwheat family known by the common name Nuttall's knotweed. It grows in the Pacific Northwest, in British Columbia, Washington, and Oregon.^[2]

Polygonum nuttallii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Polygonaceae
Genus:	Polygonum
Species:	P. nuttallii
Binomial name
Polygonum nuttallii Small 1895
Synonyms[1]
Polygonum intermedium Nutt. ex S. Watson 1882, illegal homonym not Ehrh. 1791 Polygonum douglasii subsp. nuttallii (Small) J.C. Hickman

Polygonum nuttallii is an herb up to 35 cm (14 in) tall. Stems are thin and wiry. Flowers are white or pink.^[3][4][5]