Abstract Brazil harbors the highest richness of Convolvulaceae with 424 species recognized mainly distributed in the Amazon, Atlantic Forest, Caatinga and Cerrado phytogeographic domains. Seventeen of these species are representatives of Bonamia, with ten endemic to the country. The aim of the study was to map the distribution of this group to understand its richness, its sampling and detecting areas of endemism, valuable information for conservation. We collected data gathered from herbaria and from the online database. The data were refined (1) excluding of records not at the species level; (2) records with no identification of collection site or with only the identification of the state of collection. There was calculated the richness, the number of records and an estimate of richness per cell. We conducted a parsimony analysis of endemism for distribution analysis. Finally, the knowledge of richness for the species was analyzed. There were gathered 420 occurrence records, in 87 grid cells. Most grid cells observed in the study presented one species. Two endemic areas were found for the genus. The results contribute to the understanding of the distribution of the group in Brazil, highlighting shortfalls in collections. 42 Amazon Forest domains Bonamia country conservation database 1 (1 level 2 (2 cell Finally analyzed 8 genus collections 4 (

RESUMO A vegetação de restinga é formada por comunidades costeiras diversificadas, determinadas por fatores abióticos, como a topografia e a influência flúvio-marinha. As informações sobre a composição florística das restingas do litoral central do Estado de São Paulo são deficientes, poucos trabalhos referem a ocorrência de Acanthaceae nesse ecossistema e, quando o fazem, não há descrição das espécies. Foram encontradas dez espécies dos seguintes gêneros no Parque Estadual Restinga de Bertioga (PERB): Aphelandra, Avicennia, Brillantaisia, Justicia, Hygrophila, Herpetacanthus, Lepidagathis e Ruellia. Este trabalho apresenta uma chave de identificação das espécies, descrições, informações sobre habitat e distribuição geográfica e fotografias das espécies.

ABSTRACT Restinga is a costal vegetation with different physiognomic communities, determined by abiotic factors, such as topography and fluvial-marine influence. There are few works on restinga floristic composition of the central coastline of Sao Paulo State, and a small number of them report the occurrence of Acanthaceae in this ecosystem, none with species description. Ten species of the following genera were found in Parque Estadual Restinga de Bertioga: Aphelandra, Avicennia, Brillantaisia, Justicia, Hygrophila, Herpetacanthus, Lepidagathis and Ruellia. We present an identification key for the species, descriptions, information about the habitat and distribution, and photographs of the species.