Siebert, Stefan, Madeleen Struwig, Leandra Knoetze, and Dennis M. Komape. 2018. “Celtis Sinensis Pers. (Ulmaceae) Naturalised in Northern South Africa and Keys to Distinguish Between Celtis Species Commonly Cultivated in Urban Environments”. Bothalia, African Biodiversity &Amp; Conservation 48 (1). https://doi.org/10.4102/abc.v48i1.2288.