Caesalpinus, Andreas ăn´drēəs sĕsălpī´nəs [key], Latinized from Andrea Cesalpinoändrĕ´ä chāzälpē´nō [key], 1519–1603, Italian botanist and physiologist. He was physician to Pope Clement VIII. He described, in part and as a theory only, the circulation of blood. His chief botanical work, De plantis (1583), contains the first classification of plants according to their fruits, based on a comparative study of his large collection. Linnaeus considered him the first true systematist. He was at the Univ. of Pisa and founded its botanical garden.
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