It is an upright perennial herb with mauve to purple flowers and grows in New South Wales, Queensland, Western Australia and the Northern Territory.

Murdannia graminea is an upright, tufting perennial herb with tuberous roots and ascending stems, up 10–60 cm (3.9–23.6 in) high.

Most of the leaves rise from the base, occasionally with a few aerial stems, linear, distinctly veined, 5–30 cm (2.0–11.8 in) long, 2–11 mm (0.079–0.433 in) wide, usually rough to softly hairy and acute at the apex.

The flowers are borne in small clusters at the end of stems and have three rounded, mauve, blue or white petals and slender pedicels 3–10 mm (0.12–0.39 in) long.

[6] Grass lily grows in woodlands, sclerophyll forest in wetter locations in New South Wales, Queensland, Western Australia and the Northern Territory.