There are six species of Dietes native to frost-free areas of the Southern Hemisphere with five species from Africa and one species from Lord Howe Island east of Australia.
They are evergreen plants with long, sword-shaped leaves and white or yellow flowers with three large outer segments.
At one point, Dietes was considered to be part of the genus Moraea, but they were separated because Dietes grows from a rhizome and Moraea from a corm.
Name Derivation: Having two relatives, refers to the relationship between this genus and Moraea and Iris
Dietes is in the family Iridaceae.