This is a typical beardless Iris of subgenus Limniris, series Californicae, growing from a rhizome that is typically under a centimeter in diameter. Its leaves are about 2 centimeters (0.79 in) wide. It flowers from April to June. Flowers are usually a purplish-blue, though occasionally white or yellow flowers are found. Two or three flowers are found on each stem, which is of variable height, ranging from 15–80 centimeters (5.9–31.5 in) tall.