| Theodor Magnus Fries | |
|---|---|
| Born |
28 October 1832 Femsjö, Sweden |
| Died | 29 March 1913 (aged 80) Uppsala, Sweden |
| Nationality | Swedish |
| Fields | Botany, Lichenology |
| Author abbrev. (botany) | Th.Fr. |
Theodor Magnus Fries (28 October 1832 – 29 March 1913), the son of Elias Magnus Fries, was a Swedish botanist and lichenologist.
Following in his father's footsteps, Fries studied botany, obtaining his doctoral degree in 1857 at Uppsala. He became a member of the Royal Swedish Academy of Sciences in 1865 and professor of botany and applied economics at Uppsala in 1877. His most notable work was Lichenographia scandinavica (1871–1874). He also produced a two volume biography of Carl Linnaeus (1903).