@article{rataj_1978,  title={Alismataceae of Brazil},  volume={8},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921978081s005},  DOI={10.1590/1809-43921978081s005},  number={1},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Rataj, Karel},  year={1978},  month={Mar},  pages={5–53} }