This beautiful iris is common in coastal areas. The flower comprises 3 long petal-like sepals which are broad and down-curving and 3 narrower, shorter and more erect petals. Above each sepal is a style branch, another petal-like structure with an upturned tip. Leaf blades are long and curving, attached edge-wise to the stem. The flower varies in color from lavender through to rich blue-purple, generally with white veins and a yellowish patch towards the base of the sepal.