Ernst Julius Rusch, farmer and business man, came to Namibia as a volunteer soldier in January 1890. He settled on the Farm Lichtenstein, near Windhoek, where he cultivated succulent plants and later started a nursery. The botanist M.K. Dinter* often visited Rusch and brought him succulents to cultivate. Rusch and his son, Ernst Franz Theodor Rusch (1897-1964) often collected plants together. The vygie genus Ruschia (fam. Aizoaceae) and the species Conophytum ruschi, Dipcadi ernesti-ruschi and Anacampseros ruschii were named in his honour by G. Schwantes and Dinter, while Lithops ruschiorum commemorates both father and son. Specimens collected by the elder Rusch were added to Dinter's herbarium.