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is an annual species of flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
. It is native to the tropical Americas but a widespread introduced species
An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...
in other places, including Europe, Africa, and Australia. When it dries it forms tumbleweed
A tumbleweed is the above-ground part of a plant that, once mature and dry, disengages from the root and tumbles away in the wind. Usually, the tumbleweed is the entire plant apart from the roots, but in a few species it is a flower cluster. The tumbleweed habit is most common in steppe and desert...
A common name of a taxon or organism is a name in general use within a community; it is often contrasted with the scientific name for the same organism...
s include (United States) tumble pigweed
; (Great Britain) pigweed amaranth
, prostrate pigweed
, white amaranth
, and white pigweed