Johan Erhard Areschoug (Johannes Erhard ARESCHOUG, Philos. Doctor, Botanices et Oeconomiae) (September 16, 1811 - May 7, 1887) was a Swedish botanist who was a native of Göteborg. He was a member of the Arreskow family (in Swedish).
He studied natural sciences at the University of Lund, where in 1838 he earned his doctorate in philosophy. In 1859 he succeeded Elias Magnus Fries (1794-1878) as professor of botany at the University of Uppsala, a position he maintained until 1876. In 1851, he was elected a member of the Royal Swedish Academy of Sciences.
Areschoug performed extensive field studies of Scandinavian cryptogams, and is remembered for his work in the field of phycology. The red algae genus Areschougia from the family Areschougiaceae is named in his honor.
This botanist is denoted by the author abbreviation Aresch. when citing a botanical name.[1]