A discussion of plants collected on Ruwenzori by A. F. R. Wollaston, during the British Museum Collecting Expedition to the range in early 1906. Wollaston and others climbed above the snow-lines, but successful ascents of the main peaks were made later that same year by members of the expedition led and organised by the Duke of the Abruzzi. The present offprint describes the areas in which specimens were collected, and classifies the specimens.