2n = 2x = 24 voucher: Spooner et al. 6656 (BOLV, PTIS) (Hijmans, et al. 2007)
Solanum gandarillasii is known from south-central Bolivia (Depts. Cochabamba, Chuquisaca, Santa Cruz), among shrubs, spiny scrub and cacti, in forests, typically in dry environments, in humus, clay or rocky soil; 1450-3000 m in elevation.
Solanum gandarillasii is a member of Solanum sect. Petota Dumort., the tuber-bearing cultivated and wild potatoes. Within sect. Petota, S. gandarillasii is a member of a very diverse clade related to the cultivated potato. On a higher taxonomic level, it is a member of the informally-named Potato Clade, a group of perhaps 200-300 species that also includes the tomato and its wild relatives (Bohs, 2005).
Solanum gandarillasii is distinguished by its relatively short stature, broad leaflets, especially the terminal leaflet, and by its distinctive calyces that are broadly ligulate and reflexed, with the apex not differentiated into an acumen distally.
Hawkes, J.G. & J.P. Hjerting 1989. The potatoes of Bolivia: their breeding value and evolutionary relationships.
Oxford University Press, Oxford.
Ochoa, C.M. 1990. The potatoes of South America: Bolivia.
Cambridge University Press, Cambridge, UK.
Bohs, L. 2005. Major clades in Solanum based on ndhF sequences.
Pp. 27-49 in R. C. Keating, V. C. Hollowell, & T. B. Croat (eds.), A festschrift for William G. D’Arcy: the legacy of a taxonomist. Monographs in Systematic Botany from the Missouri Botanical Garden, Vol. 104. Missouri Botanical Garden Press, St. Louis.
Hijmans, R., T. Gavrilenko, S. Stephenson, J. Bamberg, A. Salas & D.M. Spooner 2007. Geographic and environmental range expansion through polyploidy in wild potatoes (Solanum section Petota).
Global Ecol. Biogeogr. 16: 485-495.