Armen Leonovich Takhtajan or Takhtajian, was a Soviet-Armenian botanist, one of the most important figures in 20th century plant evolution 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.
- Occupation
- botanist, pteridologist, university teacher, botanical collector
- Citizenship
- Russian Empire, Russian Republic, Transcaucasian Commissariat, Transcaucasian Democratic Federative Republic
- Born
- May 28, 1910
- Died
- November 13, 2009
