Polygonum argyrocoleon

Polygonum argyrocoleon, with common names silver-sheath knotweed^[3] and Persian knotweed, is an Asian species of plants in the buckwheat family. It is native to Siberia, western China, Central Asia, and the Middle East.^[4] It has also become naturalized in parts of the United States, primarily the Southwest, and northwestern Mexico.^[5][6]

Polygonum argyrocoleon
In Armenia
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Polygonaceae
Genus:	Polygonum
Species:	P. argyrocoleon
Binomial name
Polygonum argyrocoleon Steud. ex Kunze 1847
Synonyms[2]
Polygonum deciduum Boiss. & Noe ex Meissn.

Polygonum argyrocoleon is an annual herb up to 80 cm (31 in) tall. It has very small leaves rarely more than 5 cm (2.0 in) long.^[7][4]