Page "Iridaceae" Paragraph 39

Up to 66 genera have been recognised in the family, with a total of around 2, 000 species worldwide.

The Afrotropic ecozone, and in particular South Africa, have the greatest diversity of genera.

DNA sequence information coupled with some associated morphological features provided evidence that several previously recognised New World Tigridieae genera could not retain a generic rank.

These are Ainea, Colima, Fosteria, Rigidella and Sessilanthera, which are currently included in Tigridia.

The Bolivian genus Cardenanthus was subsumed in Mastigostyla, and Onira and Kelissa were included in the temperate South American genus Cypella.

For the same reason, Tamia was included in Calydorea and Tucma in Ennealophus.