IRIS

is a genus of perennial herbs of natural order Iridaceae; the root is a horizontal rhizome; leaves are long, narrow, and green; flowers, yellow or purple, are epigynous and regular, There are three petals, sepals, stamens, and stigmas. The sepals and stigmas function as petals. The ovary is tri-locular and inferior. The fioral envelope is united at the base and carries broad bands of hairs. The fleur-de-lis is an iris.