1. Adamson, R.S. 1926. On the phylogeny of some shrubby Iridaceae. Trans. R. Soc. S. Afr. 13: 373-378.
2. Arber, A.R. 1921. The leaf structure of the Iridaceae, considered in relation to the phyllode theory. Ann. Bot. 35: 301336.
3. Barthlott, W., Frölich, D. 1983. Mikromorphologie und Orientierungsmuster epicuticularer Wachs-Kristalloide: ein neues systematisches Merkmal bei Monokotylen. Plant Syst. Evol. 142: 171-185.
4. Bate-Smith, E.C. 1968. See general references.
5. Baytop, T., Mathew, B., Brighton, C. 1975. Four new taxa in Turkish Crocus (Iridaceae). Kew Bull. 30: 241-246. Behnke, H.-D. 1981. See general references.