@article{rodrigues_estelita_2003,  title={Origin and structure of the Kranz tissue in bracts of Cyperus giganteus Vahl (Cyperaceae)},  volume={26},  ISSN={0100-8404},  url={https://doi.org/10.1590/S0100-84042003000400003},  DOI={10.1590/S0100-84042003000400003},  number={4},  journal={Brazilian Journal of Botany},  publisher={Sociedade Botânica de São Paulo},  author={Rodrigues, Ana Claudia and Estelita, Maria Emília Maranhão},  year={2003},  month={Oct},  pages={445–452} }