African Iris.........................................................Dietes vegeta - Flower is white with blue and yellow center, upright, linear foliage, clumping habit.
...........................................................Dietes bicolor - Yellow flower with brown center, spreads by clumping and plantlets borne on stems.
Both of these varieties prefer moderate moisture, they need to be watered ocassionally to keep them at their peak. Some organic material is desired in the soil as well. Plant in full sun or part shade. Propagate by division or seed.