''Polygonum argyrocoleon'', common names silver-sheath knotweed 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.
[ It has also become naturalized in parts of the United States, primarily the ]Southwest
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...
, and northwestern Mexico.
''Polygonum argyrocoleon'' is an annual herb up to tall. It has very small leaves rarely more than long.Flora of North America, ''Polygonum argyrocoleon'' Steudel ex Kunze, 1847. Persian or silversheath knotweed
/ref>[Flora of China, ''Polygonum argyrocoleon'' Steudel ex Kuntze, 1847. 帚萹蓄 zhou bian xu ]
/ref>
References
External links
Line Drawing from Flora Palaestina
argyrocoleon
Flora of Asia
Plants described in 1847
{{Polygonaceae-stub