Luceño, M., Alves, M. V., & Mendes, A. P. (1997). Floristic catalog and keys for identification of species of Cyperaceae from the States of Pemambuco and Paraiba (Northeastern Brazil). Anales Del Jardín Botánico De Madrid, 55(1), 67–100. https://doi.org/10.3989/ajbm.1997.v55.i1.260