@article{plowman_1984,  title={New taxa of Erythroxylum (Erythroxylaceae) from the Amazon basin.},  volume={14},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921984145143},  DOI={10.1590/1809-43921984145143},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Plowman, Timothy},  year={1984},  pages={117–144} }