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In page Caladenia:

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There has been disagreement between taxonomists as to which orchids belong in the genus Caladenia and which do not, and about classification within the genus.[6] Recent studies of the molecular phylogenetics of the group suggest that John Lindley’s 1840 description of Caladenia (in The Genera and Species of Orchidaceous Plants),[7] but including Glossodia and Elythranthera, as being the most accurate reflection of the subtribe Caladeniinae. Those orchids previously included in the genera Glossodia, Elythranthera and Cyanicula have been transferred to Caladenia.[8]