The Atlantic Forest is one of the most diverse and threatened phytogeographical domains of the world. Despite that, it includes regions of poor floristic knowledge, even in protected areas. Although the importance of protected areas in conserving the Atlantic Forest hotspot is undisputed, it is necessary to recognize the floristic richness of these areas to propose effective conservation actions. In this sense, online databases have proved to be a promising tool for compiling species lists with relevant biodiversity information. This study is based on the list of vascular plants of the “Parque Estadual da Pedra Selada”, published in the “Catálogo de Plantas das Unidades de Conservação do Brasil’. It summarizes species richness, endemism, and conservation status of this protected area.