As a very special treat I was able to view the original Ferdinand Bauer and Thaddäus Haenke color codes from the late 1700s while visiting the Royal Botanic Gardens (CSIC) of
It is still unknown how the Bohemian born Haenke purchased Ferdinand Bauer’s color chart (140 different colors) – Haenke developed it further and included it in his Systema Colorum, in which Haenke tried to establish a system of colors for the use of painters and designers working on scientific illustration. The system was reviewed in detail by H.W. Lack and V. Ibanez and published in the Curtis’s Botanical magazine in 1997. Please see some additional images in the BI-Facebook.