It has baby blue flowers with intricate markings, shading to purplish blue at the base.[10]
Like other members of the Reticulatae group, such as Iris vartanii and Iris danfordiae, it throws out a very large number of small bulbils round the base of the bulb. If these are planted
separately in a reserve ground, they will develop into flowering bulbs in the course of two or three years. Seedlings of I. vartani certainly, and of I. histrio normally needs protection at all times, especially in the UK.[11]
Iris histrio has been separated into two subspecies by Mathew (1989) as subsp. histrio and subsp. aintabensis because of variations in leaf, perigon tube and segment measurements.[12]
Iris histrio subsp. aintabensis has pale smaller blue flowers that are splashed darker on the falls and with a yellow or orange ridge. It is reported to be easier to grow than the species.[10]
Also known as Iris histrio var. aintabensis.[18] It was found in the rocky scrublands of southern Turkey, in the Gaziantep-Maras region.[19]
Iris histrio subsp. atropurpurea (Dykes) has purple flowers but with no markings on the falls.[20] Found in 1913. This is now thought, to be a synonym of Iris reticulata var. reticulata.[21]