This beautiful iris is common in coastal areas. The flower is made of 3 long petal-like sepals, which are broad and down-curving; and 3 true petals, which are narrower, shorter and more erect. 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 to rich blue-purple. It usually has white veins, and a yellowish patch towards the base of the sepal.