Solanum pennellii is a wild tomato species endemic to Andean regions in South America, where it has evolved to thrive in arid habitats. Because of its extreme stress tolerance and unusual morphology, it is an important donor of germplasm for the cultivated tomato Solanum lycopersicum.
Bolger, A., et al. (2014). "The genome of the stress-tolerant wild tomato species Solanum pennellii." Nature Genetics 46: 1034.