1. (noun) tūrutu, New Zealand blueberry, Dianella nigra - loose tussock forming evergreen perennial herb, forming dense to open, diffuse clumps; rhizomes horizontally 150 mm (or more) long, strong and well developed. Leaves 250-800 x 12-18 mm, uniformly green to dark green, upright to strongly curved and distinctly drooping, more or less flat. Green or white flowers November - December and berries from grey-white and dull to strongly violet-blue and glossy.