Carl Ludwig Willdenow (August 22, 1765 - July 10, 1812) was a German botanist and pharmacist. August 22 is the 234th day of the year in the Gregorian calendar (235th in leap years), with 131 days remaining. ... 1765 was a common year starting on Tuesday (see link for calendar). ... July 10 is the 191st day (192nd in leap years) of the year in the Gregorian Calendar, with 174 days remaining. ... 1812 was a leap year starting on Wednesday (see link for calendar). ... Botany is the scientific study of plant life. ... The mortar and pestle is an international symbol of pharmacists and pharmacies. ...

Willdenow was born in Berlin and studied medicine and botany at the University of Halle. He was a director of the Botanical garden of Berlin from 1801 until his death. There he studied many South American plants, brought back by the explorer Alexander von Humboldt. He was interested in the adaptation of plants to climate, showing that the same climate had plants having common characteristics. His herbarium, containing more than 20,000 species, is still preserved in Berlin. (help· info) is the capital city and a state of Germany. ... Medicine is the branch of health science and the sector of public life concerned with maintaining human health or restoring it through the treatment of disease and injury. ... Botany is the scientific study of plantlife. ... The Martin-Luther-University of Halle-Wittenberg is located in the German cities of Halle, Saxony-Anhalt and Wittenberg. ... Inside the United States Botanic Garden Inside the Rio de Janeiro Botanic Garden (Brazil), 1890 Botanical gardens (in Latin, hortus botanicus) grow a wide variety of plants primarily categorized and documented for scientific purposes, but also for the enjoyment and education of visitors, a consideration that has become essential to... (help· info) is the capital city and a state of Germany. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... Friedrich Heinrich Alexander, Baron von Humboldt, (September 14, 1769, Berlin–May 6, 1859, Berlin), was a German naturalist and explorer, and the younger brother of the Prussian minister, philosopher, and linguist Wilhelm von Humboldt. ... In Botany, a herbarium is a collection of preserved plants or plant parts, mainly in a dried form. ...

The standard botanical author abbreviation Willd. is applied to plants he described. In biology, binomial nomenclature is the formal method of naming species. ...

Works

• Florae Berolinensis prodromus (1787)
• Grundriß der Kräuterkunde (1792)
• Berlinische Baumzucht (1811)
• Linnaei species plantarum (1798-1826, 6 volumes)
• Anleitung zum Selbststudium der Botanik (1804)
• Enumeratio plantarum horti regii botanici Berolinensis (1809)
• Hortus Berolinensis (1816)