Cobwebbed annual herbs. Leaves entire, sessile, towards the base adnate to the lateral branch, at least the lower ones opposite and connate. Capitula solitary, axillary, subsessile, disciform, heterogamous. Involucral bracts 3-seriate, prominently incurved; outer bracts imbricate, scarious, silvery-translucent, at least the upper margins ciliate; innermost bracts subcartilaginous, with a ciliate, hyaline apex, shorter than outer bracts; receptacle flat, glabrous, ebracteate. Outer florets female, filiform; inner florets bisexual, 4-lobed, fewer than outer florets, stamens 4, anthers tailed, style branches short, truncate. Cypselas obovoid or ellipsoid, minutely papillose; pappus absent.
Monotypic genus endemic to Australia.