Small to moderate-sized epiphytic orchids. Species from mainland Australia have short to relatively long wiry stems, long tangled roots and short leathery leaves, whereas a species from Lord Howe Island has an upright growth habit with fibrous leafy stems and spreading roots. Racemes short, thin, few-flowered. Flowers resupinate, small, fragrant. Sepals and petals free, of similar size and shape. Labellum fixed immovably to apex of column foot. Labellum 3-lobed; spur prominent, with hairy finger-like callus. Column short with short basal foot. Pollinia 4 in 2 unequal, appressed pairs, hard, waxy, orange, attached via long, narrow stipe to small, narrow viscidium.
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