| Alexander Braun | |
![]() Alexander Braun
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| Born | May 10, 1805 |
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| Died | March 29, 1877 |
| Fields | botany |
| Institutions | Freiburg Giessen University of Berlin |
| Known for | morphology |
Alexander Carl Heinrich Braun (May 10, 1805 - March 29, 1877) was a German botanist from Regensburg, Bavaria. Events 1291 - Scottish Nobles recognize the authority of Edward I of England. Year 1805 ( MDCCCV) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or Events 1461 - Wars of the Roses: Battle of Towton - Edward of York defeats Queen Margaret to become King Year 1877 ( MDCCCLXXVII) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a Common Botany, plant science(s, phytology, or plant biology is a branch of Biology and is the scientific study of plant Life The University of Gießen (German Universität Gießen) is officially called Justus Liebig-Universität Gießen after its most famous member Comparative anatomy is the study of similarities and differences in the Anatomy of Organisms It is closely related to Evolutionary biology and Phylogeny Events 1291 - Scottish Nobles recognize the authority of Edward I of England. Year 1805 ( MDCCCV) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or Events 1461 - Wars of the Roses: Battle of Towton - Edward of York defeats Queen Margaret to become King Year 1877 ( MDCCCLXXVII) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a Common Botany, plant science(s, phytology, or plant biology is a branch of Biology and is the scientific study of plant Life Regensburg ( also Ratisbon, Ratisbona Řezno originally Castra Regina) is a City (population 131000 in 2007 in Bavaria, Germany Bavaria ( German:, with an area of 70553 Km² (27241 square miles and almost 12 He studied botany in Heidelberg, Paris and Munich. Heidelberg is a city in Baden-Württemberg, Germany. As of 2006 over 140000 people live within the city's area Paris (ˈpærɨs in English; in French) is the Capital of France and the country's largest city Munich (München; Minga is the capital city of Bavaria, Germany. In 1833 he began teaching botany at the Polytechnic School of Karlsruhe, and stayed there until 1846. Karlsruhe (ˈkaɐ̯lsʁuːə population 285812 in 2006 is a city in the south west of Germany, in the Bundesland Baden-Württemberg, located near Afterwards he was a professor of botany in Freiburg (1846), Giessen (1850) and at the University of Berlin (1851), where he remained until 1877. The University of Gießen (German Universität Gießen) is officially called Justus Liebig-Universität Gießen after its most famous member While in Berlin, he was also director of the Berlin Botanical Garden.
Braun is primarily known for his research concerning the morphology of plants. Comparative anatomy is the study of similarities and differences in the Anatomy of Organisms It is closely related to Evolutionary biology and Phylogeny He was also a proponent of "nature philosophy" or vitalism, which was a popular 19th century speculative theory that stated that a regulative force exists within living matter in order to maintain functionality. Vitalism, as defined by the Merriam-Webster dictionary is a doctrine that the functions of a living organism are due to a vital principle distinct from physicochemical Despite these beliefs, Braun made several contributions to the cell theory of biology. Cell Theory refers to the idea that cells are the basic unit of structure in every living thing Foundations of modern biology There are five unifying principles
A decorative plant known as Braun's holly fern (polystichum braunii) is named after him. A fern is any one of a group of about 20000 Species of Plants classified in the phylum or division Pteridophyta, also known as Filicophyta Polystichum is a Genus of about 180 species of Ferns with a Cosmopolitan distribution.