Carrière Solanum rantonnetii Carrière Lycianthes rantonnetii, the blue potato bush or Paraguay nightshade,[1] is a species of flowering plant in the nightshade family Solanaceae, native to South America.

[2] Growing to about 6 ft (1.8 m) tall and broad,[1] it is a rounded evergreen shrub with a somewhat lax habit.

A profusion of trumpet-shaped, bright blue-purple flowers with a prominent yellow eye appear in summer, followed by red berries.

[3][4] The species is named for Barthélémy Victor Rantonnet, a 19th-century French horticulturalist.

[5] Lycianthes rantonnetii has previously been placed in Solanum, a huge genus which has recently been the subject of major investigation, with species being transferred to and from several different genera.