This study presents results on the floristic survey of Thelypteris subg. Meniscium (Thelypteridaceae) in the state of São Paulo. Six species and one variety are recognized: T. angustifolia (Willd.) Proctor, T. chrysodioides (Fée) C.V. Mortonvar. goyazensis (Maxon & C.V. Morton) C.V. Morton, T. longifolia (Desv.) R.M. Tryon, T. macrophylla (Kunze) C.V. Morton, T. maxoniana A.R. Sm., T. salzmannii (Fée) C.V. Morton, and T. serrata (Cav.) Alston. Descriptions for the subgenus and species, key for the species, as well as geographical distribution and comments are provided.
São Paulo; taxonomy; Thelypteridaceae; Thelypteris subg. Meniscium
