Arthur C. Cronquist

Cronquist, Arthur C. (krŏng'kwĭst, krŏn'-), 1919-92, American systematic botanist. He was the author of two introductory botanical textbooks, with Henry Allan Gleason: The Natural Geography of Plants (1964) and the Manual of Vascular Plants of the Northeastern United States and Adjacent Canada (1963, repr. 1991). Cronquist was one of the main authors of Vascular Plants of the Pacific Northwest (5 vol., 1955-69). He is best known for his system of classification of the flowering plants (1981).