It is listed with Iris bloudowii, Iris humilis, Iris lactea, Iris sibirica, Iris tenuifolia and Iris tigridia as being found in the Altai-Sayan region (where Russia, China, Mongolia and Kazakhstan come together) [REF].
Elsewhere in Eurasia, it is found in the Larch forests of Altai and Sayan mountains including Tuva) [REF].