The Flora Zambesiaca series provides comprehensive accounts of the plants and ferns native and naturalised in Zambia, Malawi, Mozambique, Zimbabwe, Botswana and the Caprivi Strip. Published in paperback following a modified Bentham & Hooker system, as parts or as whole volumes as and when they are complete. Volume 8 part 5 focuses on part of the family Acanthaceae, a taxon of dicotyledonous flowering plants containing almost 250 genera and about 2500 species.