Dianella admixta

Dianella admixta, also known as the Black-anther lily or Spreading flax-lily or Black-anther flax lily, is a species of "Dianella" native to South-eastern Australia. It was once considered to be a subspecies or variety of "Dianella revoluta".
"D. admixta" is a dense tufted perennial that typically grows to a height of and a width of and spreads by underground stems. It produces small blue flowers that bloom from August to May. It's berries and seeds are considered edible.