Erik Acharius
| Erik Acharius | |
|---|---|
| Born | 10 October 1757 | 
| Died | 14 August 1819 (aged 61) | 
| Citizenship | Sweden | 
| Alma mater | Uppsala University | 
| Known for | Pioneering lichenology | 
| Awards | Member of the Linnean Society | 
| Scientific career | |
| Fields | Botany Lichenology | 
| Academic advisors | Carl Linnaeus | 
| Author abbrev. (botany) | Ach. | 
Erik Acharius (10 October 1757 – 14 August 1819) was a Swedish botanist who pioneered the taxonomy of lichens and is known as the "father of lichenology". Acharius was famously the last pupil of Carl Linnaeus.