Dianella brevipedunculata is a species of flax lily native to Eastern Australia. It is known as the blue flax lily.
The species grows up to half a meter in height, with leaves up to 1 meter in length. Roots are fibrous, and the flowers are purplish-blue. Fruit are round and blue. The species is hardy and perennial.
Dianella brevipedunculata is common in cultivation as an ornamental plant. The berries are reported to be mildly toxic.