Verbenaceae in Emas National Park (Goiás state, Central Brazil), with a focus on chromatic variation in the corollas of Lippia filifolia

Emas National Park is a critical region for the conservation of biodiversity in the Cerrado domain, yet its flora remains insufficiently studied from a taxonomic perspective. To enhance taxonomic and biogeographic knowledge of Verbenaceae in the Brazilian Central Plateau and to support ongoing conservation efforts, we provide a synopsis, photographs, and an identification key for the taxa occurring in this protected area. In total, 12 taxa belonging to three genera were recorded, with Lippia stachyoides var. guajajarana being endemic to the Park. This study focused on documenting the chromatic variation in the corollas of Lippia filifolia. While specimens from the Espinhaço Range and Serra da Canastra (Minas Gerais state) exhibit yellow corollas, those from Emas National Park (Goiás state) display red coloration, an uncommon trait within the genus.