Armen Takhtajan

Armen Leonovich Takhtajan or Takhtajian (Armenian: Արմեն Լևոնի Թախտաջյան; Russian: Армен Леонович Тахтаджян; pronounced takh-tuh-JAHN; 10 June 1910 – 13 November 2009), was a Soviet-Armenianbotanist, one of the most important figures in 20th century plantevolution and systematics and biogeography. His other interests included morphology of flowering plants, paleobotany, and the flora of the Caucasus. He was one of the most influential taxonomists of the latter twentieth century.