The orange flowers of Chasmanthe aethiopica grow in a spike. A flower is about 22 mm long. The two-lipped corolla consists of an orange tube of one long, curving upper tepal and five shorter tepals appearing twisted in the lower part. The style ends in three branches, three stigmas. Pollination is done by sunbirds.
The generic name, Chasmanthe, is derived from the Greek words khasme meaning wide open or gaping and anthos meaning flower, referring to the flower shape (Euston-Brown and Kruger, 2023; Manning 2009; Bond and Goldblatt, 1984; iNaturalist).