Erik Acharius (1757–1819)
Born 1757 CE, died 1819 CE.
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.
Text from the Wikipedia article Erik_Acharius, licensed CC BY-SA 4.0.