Menthinae, one of the five subtribes of Mentheae (Lamiaceae), with ca. 735 species, is represented in Brazil by a wide range of herbs and shrubs. During an investigation of the taxonomic history of the group for the Flora e Funga do Brasil project, several nomenclatural issues with typifications in the group have been identified. This study attempts to resolve them, making suggestions of new types and re-evaluation of synonyms. Thirteen lectotypifications and one neotypification are being proposed, along with the recognition of Thymus selloi Spreng. ex J.A.Schmidt as a nomen nudum . Most of the suggested changes are due to the loss of many of Sellow’s types at B during WWII, lack of specific herbaria references and collector numbers in the protologues, or to existence of designated syntypes in the referred collections. Our study is a contribution to the nomenclatural and taxonomic knowledge of Menthinae, providing a stable foundation for future study of its taxonomy, biogeography, and evolution.
This study details the floristic diversity of Mentheae (Lamiaceae - Nepetoideae) from the Itatiaia National Park, the first Protected Area in Brazil. Among the 30 species of Lamiaceae cited for the Park, we recorded 15 species belonging to Mentheae arranged in seven genera: Cunila (2 spp.), Hedeoma (1 sp.), Hesperozygis (1 sp.), Lepechinia (1 sp.), Prunella (1 sp.), Rhabdocaulon (1 sp.), and Salvia (8 spp.). The region presents significant diversity, considering the 62 native species of Mentheae recorded in the Brazilian Southeast. The species are distributed in the Park’s different vegetation types, mostly in shaded areas of the ombrophilous forests or throughout high-altitude grasslands. We provide a complete description for each species and an identification key, as well as comments on species distribution, habitat, morphological variation, and phenology.
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