Paul Dietrich Giseke

Paul Dietrich Giseke (8 December 1741 – 26 April 1796) was a German botanist, physician, teacher and librarian.

Giseke made notes of Linnaeus' lectures and published them in 1792 as Praelectiones in Ordines Naturales Plantarum.

The book included an illustration "Tabula genealogico-geographica affinitatum plantarum secundum ordines naturales Linnaei" which showed the affinities of the families in a form similar to a geographical map.

It included circles for families with the size indicating the number of genera contained.

[1][2] Back from his travels, he settled in Hamburg and started practice as a physician, but in December 1771 started teaching as Professor of Physics and Discourse at the Academic Gymnasium in Hamburg.