Alexander Braun


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Braun, Alexander

 

Born May 10, 1805, in Regensburg; died Mar. 29, 1877, in Berlin. German botanist.

Braun was a professor at the Polytechnic School in Karlsruhe (1833), professor and director of the botanical garden at the University of Freiburg (1846), professor at the University of Berlin, and director of the botanical garden in Berlin (1851). He studied the structure, development, and taxonomy of freshwater green algae, ferns, and sago palms and investigated parthenogenesis and polyembryony in plants, phenomena of symmetry, and other phenomena. Some of his studies contributed to the creation of the cell theory. The natural system of plants developed by Braun served as a base for the later systems of the German botanists A. Eichler and A. Engler. Braun was a proponent of idealistic natural philosophy. According to Braun, the original cause of all changes in organisms is the “spirit, ” which determines a single plan for the structure of all organisms and their internal striving for perfection.

REFERENCES

Lunkevich, V. V. Ot Geraklita do Darvina, vol. 3. Moscow-Leningrad, 1943.
Sachs, J. Geschichte der Botanik. Munich, 1874. Pages 185-95.
References in periodicals archive ?
The team, comprised of Alexander Braun and Sebastian Utz both of the University of St.
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The members of the Grant-in-Aid Selection Committee for 2017 were Alexander Braun, Tom Dunning Newbury, Mary Stapleton, Matthew Sturm, and Brent Else.
The airline s launch A380 flight was managed by captain Gaetan Herkens and German first officer Alexander Braun
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The 16-year-old Glynn, who also made the singles semi-finals in Bahrain last week, got the better of German Alexander Braun 6-4, 6-1, while Batanov, who possibly boasts of one of the best back-hand returns in this tournament, accounted for Christos Hadjigeorgiou of Cyprus 6-3, 6-2.
In other Bahraini action, up-and-coming local Yusuf Qaed bowed to Germany's eighth seeded Alexander Braun 6-2, 6-2.
Xing analyst Alexander Braun from researcher Montega considers that investors are more attracted by social networks' growth than by its profit.
British Intelligence is on to the Nazi plan and dispatches Major Michael Thatcher to track down Hitler's killer agent Alexander Braun before he can wreck havoc with America's nuclear program.
Security guard Alexander Braun, 47, was caught in a sting arranged by Scotland Yard undercover police.
Bolivian-born Alexander Braun was caught with three other men in a sting set up by undercover police from London.
The members of the Grant-in-Aid Selection Committee for 2016 were Alexander Braun, Mark Johnson, Tom Dunning Newbury, Mary Stapleton, Matthew Sturm, and Ken Tape.