Constantin von Ettingshausen

Constantin Freiherr von Ettingshausen (or Baron Constantin von Ettingshausen) (16 June 1826 in Vienna – 1 February 1897 in Graz) was an Austrian botanist known for his paleobotanical studies of flora from the Tertiary era. He was the son of physicist Andreas von Ettingshausen.
Biography.
In 1848 he graduated as a doctor of medicine in Vienna, and became in 1854 a professor of botany and natural history at the medical and surgical military academy in that city. In 1871 he was chosen professor of botany at Graz, a position which he maintained until the close of his life.
From 1876 he made repeated visits to London, where he arranged collections at the Natural History Museum. He was distinguished for his researches on the Tertiary floras of various parts of Europe, and on the fossil floras of Australia and New Zealand. The extinct genus "Ettingshausenia" (family Vitaceae) was named in his honor by August Wilhelm Stiehler (1857).