Which botanist published the most popular botany book of his time?
John Gerard John Gerard, also spelt John Gerarde, (c. 1545–1612) was a botanist and herbalist. He maintained a large herbal garden in London. His chief notability is as the author of a large (1,484 pages) illustrated "Herball, or Generall Historie of Plantes". First published in 1597, it was the most widely circulated botany book in English in the 17th century. Except for the additions of a number of plants from his own garden and from North America, Gerard's "Herbal" is largely an unacknowledged English translation of Rembert Dodoens's herbal originally published in 1554, itself also highly popular (in Dutch, Latin, French and other English translations).
Köhler's Medicinal Plants Köhler's Medicinal Plants is an abbreviated English rendering of the book title "Köhler's Medizinal-Pflanzen in naturgetreuen Abbildungen mit kurz erläuterndem Texte : Atlas zur Pharmacopoea germanica etc." . This is a German rare medicinal guide published by the company Franz Eugen Köhler from 1883 to 1914 in Gera. The first complete edition in three volumes was published in 1887. It was mainly written by Hermann Adolph Köhler (1834-79), edited by Gustav Pabst, and contains some 300 full-page chromolithography plates by the illustrators Walther Otto Müller, C.F. Schmidt, and K. Gunther.