Polygonum utahense, the Utah knotweed, is an unresolved name for a putative North American species of plants in the buckwheat family.[2] It has been found only in the States of Utah and Arizona in the southwestern United States.[3]

Polygonum utahense
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Polygonaceae
Genus:	Polygonum
Species:	P. utahense
Binomial name
Polygonum utahense Brenckle & Cottam 1940
Synonyms[1]
Polygonum utahensis Polygonum douglasii var. utahense (Brenckle & Cottam) S.L.Welsh

Polygonum utahense is a herb up to 50 cm (20 in) tall. Stems are green or brown, not wiry. Leaves are narrow, up to 4 cm (1.6 in) long. Flowers are pink or white.[4]

References