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2. M. H. Bigel, Rhodesian Wild Flowers. Published by the trustees of the National Museums and Monuments of Rhodesia. Thomas Meikle Series Number 4, 1979, p. 52.
3. H. A. Wild, Sourthern Rhodesian Botanical Dictionary of Native and English Plant Names, Government Printer, Salisbury, Rhodesia, 1956, p. 13.
4. H. A. Wild, Rhodesian Dictionary of African and English Plant Names, Government Printer, Salisbury, Rhodesia, 1972, p. 16.
5. D. C. Plowes and R. B. Drummond, Flowers of Rhodesia, Salisbury, Longman, 1976, p. 121.