@article{cabral_bacigalupo_1997,  title={Nuevas especies de la tribu Spermacoceae (Rubiaceae) para la flora de Brasil},  volume={11},  ISSN={0102-3306},  url={https://doi.org/10.1590/S0102-33061997000100005},  DOI={10.1590/S0102-33061997000100005},  number={1},  journal={Acta Botanica Brasilica},  publisher={Sociedade Botânica do Brasil},  author={Cabral, Elsa L and Bacigalupo, Nélida M},  year={1997},  month={Jul},  pages={45–54} }