Claim: Knowltonia vesicatoria is one of at least ten species of Knowltonia that are native to South Africa, which can be differentiated from the other species by looking at its leaves and stems being hairless and slightly jagged, toothed margins of the leaves.
Evidence: This is one of at least ten species of Knowltonia that are native to South Africa. Knowltonia vesicatoria can be told apart from the other species by its leaves and stems being hairless, and by the slightly jagged, toothed margins of the leaves.