Swiss botanist (1785-1853).
Ludwig Emanuel Schaerer (11 June 1785 – 3 February 1853) was a Swiss pastor and lichenologist. Interested in natural history from a young age, Schaerer trained as a teacher and studied theology in Bern. During his career as a teacher, orphanage director, and pastor, he researched extensively and maintained correspondence with foreign botanists interested in cryptogams. Schaerer was best known for his multi-volume work Lichenum Helveticorum Spicilegium ("Anthology of Swiss Lichens"), published in 12 parts from 1823 to 1842. This series catalogued and described the lichens of Switzerland, partic