Department of Botany, Duke University, Box 90339, Durham, NC 27708.
Morphology indicates that they are closely related.
However, the broader sectional relationships within Physalis are poorly understood. Because many Physalis species are closely related, regions of quickly evolving DNA are needed to generate a resolved phylogeny. Sequence data was gathered from ITS and an approximately 1.8 kb region of waxy. Sampling of species concentrated on those within the Lanceolatae and Stellatae, with representative species from other sections. ITS 1 and ITS 2 are highly variable between species.