"(v. 1, 1974) books. Takhtajan also developed a system of floristic regions.(Takhtajan, Crovello and Cronquist, 1986) For many years restrictions were placed on his work because of his opposition to the official line on genetics promoted by Lysenko. In 1993 he worked for a while at the New York Botanical Garden. Takhtajan system The "Takhtajan system" of flowering plant classification treats flowering plants as a division (phylum), Magnoliophyta, with two classes, Magnoliopsida (dicots) and Liliopsida (monocots). These two classes are subdivided into subclasses, and then superorders, orders, and families. The Takhtajan system is similar to the Cronquist system, but with somewhat greater complexity at the higher levels. He favors smaller orders and families, to allow character and evolutionary relationships to be more easily grasped. The Takhtajan classification system remains influential; it is used, for example, by the Montréal Botanical Garden. Selected publications 1948. Морфологическая эволюция покрытосеменных (Morphological evolution of angiosperms). [Translated from Russian to German by Werner Höppner, as Die Evolution der Angiospermae 1959, Fischer, Jena] 1969. Flowering plants: origin and dispersal. Oliver and Boyd, Edinburgh [Translated from Russian by C Jeffrey] 2009. Flowering Plants. Springer, New York Legacy Takhtajan has been considered one of the leading botanists of his time. He has been honoured in the naming of several plant genera. In 1980, botanist Vandika Ervandovna Avetisyan published Takhtajaniella, which is a genus of flowering plant from Transcausica, belonging to the family Brassicaceae and it was named in his honour. Then in 1990, Nazarova published Takhtajaniantha (from the dandelion tribe within the daisy family,) and lastly in 1997, Takhtajania (from the family Winteraceae, which was found in Madagascar) was published. See also Takhtajan system References Works by Takhtajan Takhtajan, Armen. 1973. Chetyre tsarstva organicheskogo mira (Four Kingdoms of the Organic World). Priroda (Nature), Akad. Nauk 2: 22–32. External links The parting with Armen Takhtajan. Photo-report on the site of the Komarov Botanical Institute. Ivan Gabrielyan, Johanna Kovar-Eder. Obituary Nov 16 2010 1910 births 2009 deaths Russian people of Armenian descent Armenian botanists Full Members of the USSR Academy of Sciences Full Members of the Russian Academy of Sciences Phytogeographers Pteridologists Soviet botanists Scientists from Shusha Symbiogenesis researchers Foreign associates of the National Academy of Sciences Members of the German Academy of Sciences Leopoldina Members of the Norwegian Academy of Science and Letters Yerevan State University alumni Academic staff of Yerevan State University