Participant Info

Species

Polygonum aviculare [Polygonum arenastrum] [Polygonum buxiforme] [Polygon neglectum]

Family

Polygonaceae

CommonName

Devil’s shoestrings, prostrate knotweed

Presence

YES

Status

native

EarliestDate

1932

LatestDate

2019

Ecosystem

basin, shrubland, foothill, montane, ruderal, urban

Geobotanical

SSawatch, Garitas, SSanjuans, NCristos, UBasin, LBasin

Counties

Alamosa, Conejos, Costilla, Hinsdale, Mineral, Rio Grande, Saguache, Archuleta

Passes

WildlifePreserves

Alamosa, Baca, Great Sand Dunes

Other Localities

Alamosa (town), Del Norte

PhotoRecords

YES Rich Haswell: Rio Grande Co, Del Norte sidewalk 9 Oct 2019

Comments

Along with Polygonum douglasii, Polygonum aviculare is the most collected knotweed in the Watershed. It takes advantage of any flat open space, often disturbed ground but also by woods and in meadows from the montane down to Basin farms. It has a special fondness for cracks in cement sidewalks. It is found in every state, nearly every county, of the USA, and follows the Rio Grande drainage through New Mexico to the Big Bend country of Texas.

Annotation