blackberry lily, (Iris domestica), perennial flowering plant of the iris family (Iridaceae), a popular garden flower. It is native to East Asia and is naturalized in some parts of North America. Despite its name, the plant is not a true lily; it was formerly known as Belamcanda chinensis.
The blackberry lily has branching stems, lower grassy foliage, and a stout rhizomatous rootstalk. The red-spotted orange flowers have six petallike segments. The capsule wall of the fruit recurves at maturity to display shiny black seeds resembling the fruit of the blackberry.