Nomenclatural, taxonomic, and distribution novelties concerning Evolvulus chrysotrichos (Convolvulaceae): a rare and endangered species from Brazil

Abstract Nomenclatural, taxonomic, and distribution novelties concerning Evolvulus chrysotrichos (Convolvulaceae): a rare and endangered species from Brazil. Evolvulus chrysotrichos is a rare and threatened species, known from its type collection and a few old specimens. New records closer to the type locality are reported 150 years after its first collection reported by literature. We present here a complete description of this species, its first illustration and photographs in the field, distribution and phenological data, and a reassessment of its conservation status. We also designate a second-step lectotype of the name E. chrysotrichos and the lectotypification of its synonym, E. guaraniticus.