Dianella nigra forms tufts of narrow strappy foliage. The green leaves are narrow, and rough to the touch, 10–24 in (25–60 cm) long. The flowers are small and white. The berries (illustrated) are blue-purple through to white.
Dianella nigra is found throughout North Island, South Island and Three Kings Island, New Zealand, in open forests, on banks, track edges, and hillsides, from sea level to 2,500 ft (760 m). Also known as turutu, and blueberry.