Any of various prickly plants of the genus Salsola, especially S. tragus, a tumbleweed that is native to Eurasia and widespread in western North America.
A spiny weed (Salsola kali) of the goosefoot family: it matures into a spherical tumbleweed.
A prickly shrublike annual, Kali tragus
(often erroneously referred to as Salsola kali
, a synonym for Kali turgida
), which is the best-known kind of tumbleweed
Origin of russian-thistle
: it's believed to have been introduced to North America from Russia, and it's prickly like a thistle.