@article{forero_1989,  title={
       },  volume={3},  ISSN={0102-3306},  url={https://doi.org/10.1590/S0102-33061989000300026},  DOI={10.1590/S0102-33061989000300026},  number={2},  journal={Acta Botanica Brasilica},  publisher={Sociedade Botânica do Brasil},  author={Forero, Enrique},  year={1989},  pages={315–322} }