Robert Keller (24 September 1854 – 8 July 1939) was a Swiss botanist from Oberembrach, a village near Winterthur.
In 1877 he obtained his doctorate from the University of Jena, subsequently working as a teacher in the education sector of Winterthur; initially at the Mädchenschule, then from 1880 at the gymnasium and afterwards at its industrial school.
In Winterthur, he strove for various educational reforms, and was curator of the city's natural science collections.
[2] The species, Schizachyrium kelleri is one of the plants that bears his name; its botanical authors being Eduard Hackel (1850–1926) and Otto Stapf (1857–1933).
[3][4] In 1894, Keller edited and distributed the exsiccata-like specimen series Herbarium normale rosarum Europaearum.