The approximately 50 species of Jaltomata are distributed from southeastern Arizona, USA (Kearney and Peebles, 1951) to southern Bolivia (Morton, 1944), on three of the Galápagos Islands (D'Arcy, 1982), and on the Greater Antilles (Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico; Adams, 1972; Davis and Bye, 1982; Liogier and Martorell, 1982). 

The majority of the species are Andean but one of the most common species, J. repandidentata, extends throughout much of the continental range of the genus, from Mexico to Bolivia (Mione and Yacher, 2005).

Highest Collection: J. yungayensis at 4,150 m of elevation (J. Mostacero L, S. Leiva G. et al. 1897)

In the department of Cajamarca, Peru, there are over 20 distinct and defendable species! Link to Jaltomata of Cajamarca.

In the department of La Libertad, Peru there are a dozen species!

Link to Jaltomata of Arizona, Mexico and Central America