1803Methodus LichenumErik Acharius
Publishes an influential system for identifying and classifying lichens.
Historical records for Sweden in 1803, rendered directly from the World History Database and ordered by month, day and event.
Publishes an influential system for identifying and classifying lichens.
Establishes lichenology as a specialized field of botanical study.
This page is generated from stored World History Database records matching the exact country and year shown above. Exact duplicate display records are collapsed. Records without a month are listed after the monthly sections. Source provenance varies by record; formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.