Small perennials. Leaves alternate, sessile. Flowers bisexual, solitary in axils; perianth urceolate, shortly 5-lobed, fleshy toward base, glabrous except ciliate margins of lobes; stamens 5; stigmas 2. Fruiting perianth hard, shortly turbinate to hemispherical, 10-ridged, the ridges alternately more and less prominent; base slightly concave; apex truncate, 5-angled, narrowly winged; pericarp crustaceous above, membranous below; seed horizontal, circular.
Endemic monotypic genus of central and eastern temperate Australia.
Closely allied to Sclerolaena with which it is included by some authors.