-(Eriocaulaceae in the Ibitipoca State Park, Minas Gerais, Brazil). In Brazil, Eriocaulaceae comprise ca. 600 species and nine genera. Most of the taxonomic and morphological diversity center is concentrated in the campos rupestres from the Espinhaço Range. The Ibitipoca State Park (PEIB) is located within the Mantiqueira complex and is composed of different vegetation types. The present study is the floristic treatment of Eriocaulaceae species occurring in the PEIB. Twenty-two species were found, sixteen of Paepalanthus, two of Comanthera, two of Syngonanthus, one of Leiothrix, and one of Eriocaulon. These species occur in various habitats, but are frequently found in open grass dominated formations. An identification key, line drawings, descriptions, besides comments on morphological variation and geographical distribution are provided. Two new synonyms are proposed: Paepalanthus ibitipocencis Silveira = P. calvus Körn. e Paepalanthus orthoblepharus Silveira = P. henriquei Silveira & Ruhland.