N.E.Br. (Gasp.) 1932 - Brown NE, Davy JB (1932) CONTRIBUTIONS TO A KNOWLEDGE OF THE TRANSVAAL IRIDACEAE. Part II. Transactions of the Royal Society of South Africa 20(3): 261-280. doi: 10.1080/00359193209518859.
There is no corrections for Chasmanthe bicolor yet.