Rhizomatous, perennial herb. Roots fibrous. Leaves distichous, linear, clustered at rhizome apices. Inflorescence a solitary, terminal flower, not exceeding leaves. Flower bisexual; perianth segments free, subequal; stamens 6, filaments minutely pubescent, anthers basifixed; ovary superior, trilocular, ovules numerous; style linear, tapering, stigma capitate. Fruit a capsule; seeds smooth, black and shining.
A single species from alpine Australia and New Zealand.