Chasmanthe floribunda is a species of flowering plants in the iris family which is known by the common name African flag. This plant is endemic to Cape Province in South Africa, but it has been introduced to other areas of similar climate, and is considered to be naturalized in California, Algeria, Australia, Argentina, and St. Helena. Chasmanthe emerges from the ground in autumn in the Western Cape, South Africa, after the first winter rains.It is loved by sunbirds, who appreciate the nectar it provides at this time of year.Chasmanthe will flourish and flower in both sun and shade.