Figure 4 from: Särkinen T, Poczai P, Barboza GE, van der Weerden GM, Baden M, Knapp S (2018) A revision of the Old World Black Nightshades (Morelloid clade of Solanum L., Solanaceae). PhytoKeys 106: 1-223. https://doi.org/10.3897/phytokeys.106.21991

Figure 4 Distribution of the Morelloid clade of Solanum, showing number of species per 3 degree grid cells (ca. 300 km2) based on native and non-native records.