Struwig, Madeleen, Anine Jordaan, and Stefan J. Siebert. 2011. “Anatomy of the Southern African <i>Boerhavia</i> and <i>Commicarpus</i> Species (Nyctaginaceae)”. Bangladesh Journal of Plant Taxonomy 18 (2):105-15. https://doi.org/10.3329/bjpt.v18i2.9297.