The "Elenchus Vegetabilium et Animalium", written by Wilhelm Heinrich Kramer in 1756, is a turning point for the descriptive botany: from the socratic principle of scientific discourse to the binary nomenclature of Linné.
Nikolaus von Jacquin, professor of botany at the University of Vienna that time, added the binomen (scientifc name), handwritten, to the paragraphs. That was the very first time, somebody used the way of naming plants practised in Austria.

The book is kept in the library of the botanical department of the NHM Vienna.

Photo: NHM Vienna, Heimo Rainer