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". October 10 is the 283rd day of the year (284th in Leap years). ... 1757 was a common year starting on Saturday (see link for calendar). ... August 14 is the 226th day of the year in the Gregorian Calendar (227th in leap years), with 139 days remaining. ... 1819 was a common year starting on Friday (see link for calendar). ... Botany is the scientific study of plant life. ... Crustose and foliose lichens on a wall Foliose lichen on basalt Usnea australis, a fruticose form, growing on a tree branch Lichen on rock Lichens are symbiotic organisms made up by the association of microscopic green algae or cyanobacteria and filamentous fungi. ... Lichenology is the part of Botany that studies the lichens, symbiotic organisms made up by the association of a microscopical alga with a filamentous fungus. ...

Acarius was born in Gävle, matriculated at Uppsala University in 1773 and was one of the last of the students of Linnaeus. He later worked for the Royal Academy of Sciences in Stockholm and completed his medical studies at Lund University in 1782. He was appointed town medical officer in Vadstena in 1785, district medical officer in Ostrogothia in 1789, director of the new Vadstena Hospital (which he had initiated) in 1795, and titular professor in 1803. Gävle [jɛvlə] is a Municipality in Gävleborg County, in east central Sweden. ... Uppsala University Uppsala University (Swedish Uppsala universitet) is a public university in Uppsala, Sweden. ... 1773 was a common year starting on Friday (see link for calendar). ... A painting of Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as Carl von Linné  listen, and who wrote under the Latinized name Carolus Linnaeus (May 23, 1707 – January 10, 1778), was a Swedish scientist who laid the foundations for the modern scheme of taxonomy. ... The Royal Swedish Academy of Sciences or , founded in 1739 by King Frederick I, is one of the Royal Academies in Sweden. ... Note: This page contains IPA phonetic symbols in Unicode. ... Lund University Lund University (Swedish: Lunds universitet) is a university in Lund in southernmost Sweden. ... 1782 was a common year starting on Tuesday (see link for calendar). ... Vadstena Castle Vadstena is a Municipality in Östergötland County, in southeast Sweden. ... 1785 was a common year starting on Saturday (see link for calendar). ... 1789 was a common year starting on Thursday (see link for calendar). ... Vadstena Castle Vadstena is a Municipality in Östergötland County, in southeast Sweden. ... 1795 was a common year starting on Thursday (see link for calendar). ... 1803 was a common year starting on Saturday (see link for calendar). ...

Acharius belonged to the younger generations of Swedish botanists who continued what Linnaeus had left undone. Acharius began the taxonomic classification of the Lichenes and published several work in this field: Lichenographiae Suecia prodromus (1798), Methodus lichenum (1803), Lichenographia universalis (1810), Synopsis methodica lichenum (1814) and many smaller papers in periodicals. 1798 was a common year starting on Monday (see link for calendar). ... 1803 was a common year starting on Saturday (see link for calendar). ... 1810 was a common year starting on Monday (see link for calendar). ... 1814 was a common year starting on Saturday (see link for calendar). ...

He was a member of the Royal Physiographic Society in Lund (1795), the Royal Swedish Academy of Sciences (1796), the Linnean Society of London (1801) and the Royal Society of Sciences in Uppsala (1810). The Royal Swedish Physiographic Society in Lund or , is one of the Royal Academies in Sweden. ... The Royal Swedish Academy of Sciences or , founded in 1739 by King Frederick I, is one of the Royal Academies in Sweden. ... The Linnean Society of London is the worlds premier society for the study and dissemination about taxonomy. ... Categories: Stub | Swedish Royal Academies | Uppsala University ...

The genus Acharia, several plants, such as Rosa acharii and Conferva acharii and one insect, Tortrix achariana have been named after Acharius.

The collections of Acharius are distributed over several museums: the Finnish Museum of Natural History in Helsinki, the Botanical Museum in Uppsala, the Swedish Museum of Natural History and the Botanical Museum in Lund. His papers are in the Library of Uppsala University. A museum is typically a non-profit, permanent institution in the service of society and of its development, open to the public, which acquires, conserves, researches, communicates and exhibits, for purposes of study, education enjoyment, the tangible and intangible evidence of people and their environment. ... Location within Finland Helsinki (pronounced with the stress on the first syllable in Finnish: ), or Helsingfors in Swedish  listen, is the capital of Finland. ...

References

• Nordisk familjebok, vol. 1 (1904), col 96 (http://runeberg.org/nfba/0060.html)
• Monika Myrdal: "Erik Acharius, the father of lichenology", at [1] (http://linnaeus.nrm.se/botany/kbo/ach/acharius.html.en), the website of the Swedish Museum of Natural History. With links to sample images of his publications.
• Rutger Sernander: "Acharius, Erik", Svenskt biografiskt lexikon, vol. 1, pp. 37-40.