Rachel A. Levin, Edmund M. Keyes'12,  and Jill S. Miller

International Journal of Plant Sciences
2015, VOLUME 176

Miller Lab: Evolutionary Relationships, Gynodioecy, & Polyploidy in the Galápagos  Endemic Lycium minimum (Solanaceae)

Lycium minimum is an endemic species native to the Galápagos Islands and the only species of Lycium occurring at the equator. 

We demonstrate the presence of male-sterility on two islands, which represents the first discovery of separate sexes in any South American Lycium.  The presence of pollen-sterile individuals is coincident with a reduction in flower size.

Though Lycium minimum is allied with both North and South American species, it has colonized the Galápagos from South America.