Ephemeral herbs. Leaves few, sessile or petiolate, alternate and scattered along stems, margins entire. Inflorescences terminal corymbs or racemes, sparsely glandular-pubescent. Flowers zygomorphic, pedicellate in the axis of a small bract. Calyx-lobes scarcely fused, subequal; corolla with 4 posterior subequal lobes (folded at night or in dull weather) and a shorter erect, motile labellum with a concave or hood-shaped lamina covering the column; column non-motile, short, c. erect, basally fused with calyx-tube; stigma 2-lobed or undivided; ovary with many ovules on a globular basal placenta. Fruit a 2-valved globular capsule, glandular-hispid; seeds less than 0.5 mm long.
8 species, all endemic to southern Australia.