''Polygonum humifusum'' is an Asian and North American species of plants in the

buckwheat family The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1789 ...

. It grows in arctic and subarctic regions of eastern Russia, Mongolia, northeastern China,

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...

, and Canada (

Yukon Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as ...

, Northwest Territory,

Nunavut Nunavut ( , ; iu, ᓄᓇᕗᑦ , ; ) is the largest and northernmost territory of Canada. It was separated officially from the Northwest Territories on April 1, 1999, via the '' Nunavut Act'' and the '' Nunavut Land Claims Agreement Act'' ...

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include ...

, northern

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

).Pan-Arctic Flora, 410105 ''Polygonum humifusum'' C. Merk ex K. Koch
/ref> ''Polygonum humifusum'' is a branching herb with erect or reclining stems up to 30 cm (1 foot) tall. Flowers are green, pink, or white, produced in groups of 2–5. It grows in fields and on riverbanks at elevations less than 400 m (1300 feet).Flora of China ''Polygonum humifusum'' Merk ex C. Koch, 1849. 普通萹蓄 pu tong bian xu
/ref>

References

humifusum Flora of Alaska Flora of Siberia Flora of the Russian Far East Flora of Canada Plants described in 1850 Flora without expected TNC conservation status {{Polygonaceae-stub