The inflorescence is a head of flowers held at, or just above the ground but mostly covered by soil or leaf litter and little is known about the mechanism of pollination.

The flowers are non-resupinate, arranged in a spiral, inward-facing, dull coloured and lack a stalk.

The sepals and petals form a short, curved hood over the labellum and column, open on one side.

Flowering time depends on species and is followed by the fruit which is a berry that does not split open (indehiscent) and which contains 50 to 100 seeds.

[16] Rhizanthella gardneri occurs in the south-west of Western Australia where it grows in association with broombush (Melaleuca uncinata).