@article{1987,  volume={1},  ISSN={0102-3306},  url={https://doi.org/10.1590/S0102-33061987000100007},  DOI={10.1590/S0102-33061987000100007},  number={1},  journal={Acta Botanica Brasilica},  publisher={Sociedade Botânica do Brasil},  year={1987},  month={Jan},  pages={57–69} }