Lomatium cous


Lomatium cous is a perennial herb of the family Apiaceae. The root is prized as a food by the tribes of the southern plateau of the Pacific Northwest. Meriwether Lewis collected a specimen in 1806 while on his expedition.
It is called x̣áwš in the Sahaptin language, and qáamsit and qáaws in the Nez Perce language.