@article{Greuter2022,
author = {Greuter, Werner and Rankin-Rodríguez, Rosa},
year = {2022},
language = {eng},
copyright = {https://creativecommons.org/licenses/by-nc/4.0/},
title = {Notes on the genus Exostema (Rubiaceae), its limits and sectional subdivision},
volume = {71},
pages = {210 - 215},
url = "http://dx.doi.org/10.17169/refubium-32676",
}