E. Estrada et M. Martinez, PHYSALIS (SOLANACEAE) AND ALLIED GENERA - TZELTALIA, A NEW GENUS FROMTHE HIGHLANDS OF SOUTHERN MEXICO AND NORTHWESTERN GUATEMALA, Brittonia, 50(3), 1998, pp. 285-295
A morphological analysis of Physalis and several closely related gener
a, with emphasis on a group of species known as ''atypical Physalis,''
showed that two of the atypical species are better treated as a disti
nct genus. Tzeltalia is described and two new combinations are made: T
. amphitricha and T. calidaria. Restricted to the highlands of Chiapas
, Mexico, and adjacent Guatemala, Tzeltalia is distinguished from Phys
alis by a combination of characters including shrubby habit; fascicula
te flowers; lobed corolla; scabrate pollen; and non-invaginated, parti
ally open, coriaceous, and reticulate-veined fruiting calyx.