"Kali tragus [...] is an annual plant that breaks off at the stem base when it dies, and forms a tumbleweed, dispersing its seeds as the wind rolls it along. It is said to have arrived in the United States in shipments of flax seeds to South Dakota, perhaps about 1870. It now is a noxious weed throughout North America, dominating disturbed habitats such as roadsides, cultivated fields, eroded slopes, and arid regions with sparse vegetation." - https://en.wikipedia.org/wiki/Tumbleweed#Plants_that_form_tu...
These are the western equivalent of Kudzu: https://en.wikipedia.org/wiki/Kudzu_in_the_United_States
I wonder if there any species from the Americas that are invasive to Europe/Africa/Asia... ?