Fischer, E., Killmann, D. and Meve, U. 2013. Neoschumannia gishwatiensis (Apocynaceae, Asclepiadoideae-Ceropegieae) from Gishwati Forest, Rwanda—a third and new species from a disjunct African genus. Phytotaxa. 77, 2 (Jan. 2013), 19–26. DOI:https://doi.org/10.11646/phytotaxa.77.2.1.