Hydnora africana is a root holoparasite of southern Africa that emerges only to flower. The trimerous flowers of H. africana have androecial and gynoecial chambers and attract floral visitors with putrid odors emitted from prominent osmophores. We observed floral phenology and insect visitation for H. africana at two sites in southern Namibia and evaluated the insect imprisonment mechanism with beetle addition and pollen viability assays. Keywords: plant parasite; trap flower; chamber flower; Namibia; Denmestes maculatus.