''Isabelcristinia'' is a genus of shrubs in the family

Linderniaceae Linderniaceae is a family (biology), family of flowering plants in the order Lamiales, which consists of about 25 genus, genera and 265 species occurring worldwide. It is commonly known as the false-pimpernel family. ''Vandellia micrantha'' is ea ...

containing a single species, ''Isabelcristinia aromatica''. It grows on rocky outcrops called inselbergs in north-eastern

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

in the state of

Pernambuco Pernambuco ( , , ) is a States of Brazil, state of Brazil located in the Northeast Region, Brazil, Northeast region of the country. With an estimated population of 9.5 million people as of 2024, it is the List of Brazilian states by population, ...

. It has upright branches with gland-covered leaves that are aromatic to the touch. It has bilabiate flowers with a yellow lower and a pink upper lip and is likely pollinated by large bees. The genus is closely related to ''

Ameroglossum ''Ameroglossum'' is a genus of flowering plants in the family Scrophulariaceae. It includes nine species native to northeastern Brazil, where they grow in moist forest enclaves on the region's mountains and plateaus.Maia Wanderley, A., Mendonça ...

'', which is found in similar habitats, but has flowers pollinated by hummingbirds. Almeida, E.M., Wanderley, A.M., Santos, A.D.S., De Melo, J.I.M., Souza, G., Batista, F.R.D.C., Christenhusz, M.J. and Felix, L.P., 2019. Two new genera and species of Linderniaceae (Lamiales) from inselbergs in northeastern Brazil: morphological and karyological evidence. ''Phytotaxa'' 400(4): 215-226. The species is considered Endangered, because it has very little recruitment of new plants and the area where it is found is not protected and under pressure from human and feral animal disturbance.

References

Linderniaceae Monotypic Lamiales genera Taxa named by Maarten J. M. Christenhusz {{Lamiales-stub