Bulb. Leaves 4-angled, emerging before flowers. Spathes green. Flower solitary, 5-6 cm wide, blue-violet, fragrant; early spring. Perianth tube 5-8 cm long, sheathed by two leaves. Falls 4-5 cm long with gold crest. Standards 4-5 cm.

Iraq, Iran, Caucasus.

Source: Cooke, D. (2005). Iridaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.