Fig. 2

Distribution maps and habitat images of the southern African Dioscorea taxa. a Distribution map of the three South African subclades of the Africa clade: Pachycaul, Cape and D. buchananii. b Distribution map of the five Pachycaul subclade species in South Africa. Note that the distribution of D. elephantipes extends slightly into Namibia, and D. sylvatica extends into Mozambique, Zambia and Zimbabwe. From c to g: in order, habitat of D. elephantipes, Dioscorea brownii, D. hemycrypta, D. strydomiana, and D. sylvatica. The habitat image of D. elephantipes (c) displays in the foreground shoots and fruits of this taxa; the habitat image for D. strydomiana has an immature or damaged specimen in the bottom right corner. All other images only show the habitat and individuals of the species are not visible. Photographs: c-g: Paul Wilkin