( l ´äs mäng´n s fr s) (KEY) , 1794–1878, Swedish botanist. He taught (1834–59) at the Univ. of Uppsala. Fries originated the modern classification of fungi and lichens. His works include Systema mycologicum (3 vol., 1821–32) and Icones selectae Hymenomycetum (2 vol., 1867–84).
