@article{barth_barbosa_1976,  title={Catálogo sistemático  dos pólens das plantas arbóreas do Brasil meridional: XXI - Canellaceae},  volume={74},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761976000200002},  DOI={10.1590/S0074-02761976000200002},  number={2},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Barth, Ortrud Monika and Barbosa, Alda Ferreira},  year={1976},  pages={147–152} }