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 airline s launch A380 flight was managed by captain Gaetan Herkens and German first officer Alexander Braun
The Omani duo lost 6-3, 6-1 to Alexander Braun of Germany and Justin Roberts of Bahamas.
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.
Boone called Loch Harris' Austin office from the SemaTech-sponsored conference yesterday afternoon to say that Alexander Braun, associate editor of the prestigious Semiconductor International magazine, has made Blair, his paper, and his VAMMP the subject of the magazine's Technology News column in the October edition, which will be released next week.
Results: Boys singles: 1st round: Michail Pervolarakis (CYP x1) bt Egehan Sertkaya (TUR) 6-2, 6-3; Xander Veys (BEL x2) bt Eleftherios Theodorou (GRE) 6-0, 6-3; Milen IanaKiev (GER x3) bt Omar Ahmed (KSA) 6-0, 6-0; Peter Bothwell (IRL) bt Alexander Braun (GER) 6-2, 6-1.
Boys singles) Sergis Kyratzis bt Altug Celikbilek 6-2, 6-2; Alexander Braun bt Egehan Sertkaya 6-4, 6-2; Shota Meparidze bt Konstantinos Ilia 6-4, 1-0 (retd.
The Bahraini youngster is poised to play Alexander Braun, the German eighth seed, in the next round.