2n = 2x = 24 voucher: Ochoa 13959 (CIP) (Hijmans, et al. 2007)
Solanum piurae is endemic to northern Peru (Dept. Piura), among bushes and rocks but also in humid soils, 2000-3360 m in elevation.
Solanum piurae is a member of Solanum sect. Petota Dumort., the tuber-bearing cultivated and wild potatoes. Within sect. Petota, Solanum piurae is a member of a distinctive clade of southern Ecuadorian and Peruvian species formerly classified in series Piurana and some other series that frequently possess moniliform tubers and shiny coriaceous leaves. 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 piurae is morphologically similar to S. acroglossum and to some populations of S. chomatophilum. These species are similar because their stems have leaves glabrous adaxially and lilac to blue corollas. Solanum piurae has petiolulate lateral leaflets whereas S. acroglossum has sessile lateral leaflets; S. chomatophilum has lateral leaflets varying from sessile to petiolulate.
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.