Born Dec. 26, 1851, in Voorschoten, near The Hague; died Oct. 3, 1910, in St. Raphael, France. Dutch botanist.
Treub graduated from the University of Leiden in 1873. From 1880 to 1909 he was director of the botanical garden at Buiten-zorg (now Bogor), Java, which became an international center for the study of tropical plants. Treub’s main works dealt with the biology of tropical plants and with embryology. He discovered chalazogamy. In 1909 he became an honorary member of the Academy of Sciences of St. Petersburg. He was a fellow of the Royal Society of London (1899) and other foreign academies.