Data from: Peperomia (Piperaceae) from Trindade Island: a new species based on morphological and molecular data

Peperomia is one of the largest genera of basal angiosperms, with about
1,600 species, distributed pantropically. The Brazilian oceanic island of
Trindade is located about 1,200km off the Brazilian coast; its maximum
altitude is 620ma.s.l. and its area is 9.28km2. Among the 113 species of
vascular plants reported for Trindade Island there are two species of
Peperomia: Peperomia beckeri, an endemic species known only from the type
specimen; and Peperomia glabella.We re-evaluated specimens attributed to
P. glabella from Trindade Island and compared them to specimens from the
continent. The comparison included morphological analyses of the
vegetative and reproductive organs, and a molecular phylogenetic study
using the molecular markers trnK/matK and ITS. The trnK/matK marker showed
significant differences between Peperomia from the mainland and Trindade.
Together, these studies showed that the Peperomia occurring on Trindade is
a species that differs both from those previously recorded on Trindade
Island and from those on the continent, leading us to describe a new
species. Peperomia segregata is endemic to Trindade, and would likely be
considered critically endangered according to the IUCN criteria.