Tufted, rhizomatous, evergreen perennial herb. Leaves mostly basal, equitant, linear, erect. Inflorescence with scape erect, terete, often with 1–3 reduced leaves; flowering part of inflorescence branched with flowers in clusters, each cluster basally enclosed by 2 herbaceous primary bracts. Flowers actinomorphic, soon withering, almost sessile. Perianth shortly united to form a 'tube' less than 2 mm long, distally spreading, lobes equal or subequal, with distinct midveins, blue; stamens exserted, erect, filaments united at the base or free, anthers dorsifixed, yellow; style deeply 3-branched, branches entire, terete, minutely channelled, projecting horizontally between the stamens, stigmas terminal, minute; ovary trigonous-ellipsoid, enclosed by a bract. Capsule ovoid-trigonous, on a short pedicel; seeds many, surface rugose, brown.
About 7 species in America and Australia; 4 species endemic in Australia, 1 occurring in Victoria.