German botanist, physician, teacher and librarian (1741-1796).
Paul Dietrich Giseke (8 December 1741 – 26 April 1796) was a German botanist, physician, teacher and librarian. He was born in Hamburg, Germany. Giseke was the son of a Hamburg merchant. He started his studies at the Academic Gymnasium in Hamburg. He joined the University of Göttingen in 1764 and graduated in medicine in 1767. He then went on an extended trip through France and Sweden and met Linnaeus, becoming his student and a lifelong friend - Linnaeus named the genus Gisekia, now in family Gisekiaceae, after him. Giseke made notes of Linnaeus' lectures and published them in 1792 as Praele