Glen, M. F., Nicholas, A., Bester, S. P., & Lamb, J. (2015).

The renaming of Asclepias xysmalobioides with Asclepias montevaga (Apocynaceae, Asclepiadoideae)

. Phytotaxa, 202(3), 233–234. https://doi.org/10.11646/phytotaxa.202.3.10