The iris is a flower with sword-shaped leaves and drooping petals. In heraldry texts [e.g., Woodward 333], it’s mentioned alongside the lily; but while the lily is often found in period heraldry, no examples have been found of the iris, so blazoned. As a consequence, the iris has no stylized heraldic form; Society examples are usually depicted as found in nature. The illustration shows an iris slipped and leaved. See also tulip.
Keridwen of Montrose bears: Per chevron counter-ermine and argent, in base an iris azure, slipped and leaved vert.
Rachel Ashton bears: Or, three irises one and two purpure, cupped vert.
Sionett Roberts bears: Vert, three irises one and two Or.