Russian thistle

English thumbnail|Russian thistle (Kali tragus species) Etymology From en Russian + en thistle: believed to have been introduced to North America from Russia, and is prickly like a thistle. Noun Any of several species of genus Salsola genus and its close relatives, prickly shrublike annuals, especially Salsola tragus species (syn. Kali tragus species), which is the best-known kind of tumbleweed in the US. en Australia Salsola australis species Synonyms Salsola tragus prickly Russian thistle Derived terms barbwire Russian thistle (Salsola paulsenii species) opposite-leaf Russian thistle (Soda inermis species) shrubby Russian thistle (now Nitrosalsola vermiculata species) slender Russian thistle (Salsola collina species) Translations Salsola tragus Finnish: fi idänotakilokki en Amaranths and goosefoots