@article{1992,  title={Universidade Federal do Paraná - UFPR},  volume={6},  ISSN={0102-3306},  url={https://doi.org/10.1590/S0102-33061992000200009},  DOI={10.1590/S0102-33061992000200009},  number={2},  journal={Acta Botanica Brasilica},  publisher={Sociedade Botânica do Brasil},  year={1992},  month={Dec},  pages={138–143} }