 Dinter visited the Lake Otjikoto in 1911 and collected several hitherto unknown species of plants, among them grass of the genus "Rottboellia".He accompanied and guided Prof. Adolf Engler, the noted authority on African flora, on a rather fleeting trip through the region in 1913.Their trip started at Swakopmund and proceeded smoothly in a specially-commissioned railway carriage as far as Tsumeb and then south to Warmbad, covering about in the space of a month.