In 1900 he moved to the University of Graz as professor of Systematic Botany, where he built up the botanical institute. In 1910 he was appointed as director of the university's botanical garden, and in 1916 the new institute acquired its own building.
In 1900, he moved to the University of Graz to serve as a professor of Systematic Botany. There, he developed the botanical institute. In 1910, he was appointed director of the university's botanical garden, and in 1916, the new institute acquired its own space.