Ferdinand Bauer (1760-1826), the fifth son of Lukas and Theresa Bauer and his brother Franz (1758-1788), the fourth son, are both very well known for their botanical illustrations from Australia and other parts of the world.
Of the seven Bauer siblings four were very artistic and Joseph (1756-1831) was the only one who also did engravings like their father Lukas.
Joseph, Franz and Ferdinand started to work with the Codex Lichtenstein in ca 1770 (~just count how young the brothers were ~).
All three were working over ten years with the Codex (and for the Royal Family of Lichtenstein), which after finished contained 31000 plant species illustrated. It is impossible to distinguish between the brothers’ work because the plates were not signed.
In 1781 Joseph travels to Rome, 1788 Ferdinand leaves for Venice and 1788 Franz travels to London and starts working at Kew. No portrait of either Ferdinand or Joseph has survived.
(Above: Lilium superbum, watercolor by Bauer brothers; Collection of the Prince of Lichtenstein, Vaduz Castle.)
The Bauer Brothers’ color code (from before 1775); Madrid Royal Botanic Garden, Spain, archive