It has a single fleshy, channelled leaf and up to six blue flowers with small darker spots.

It grows in higher altitudes places part and the flowers have a purple lobe with a yellow tip on top of the anther.

[2][3][4] Thelymitra simulata was first formally described in 1998 by David Jones and the description was published in Australian Orchid Research.

[5] The specific epithet (simulata) is a Latin word meaning “imitate" or "copy",[6] referring to the similarity of this species to T. × truncata.

[3] The collared sun orchid grows in montane and subalpine grassland, woodland and forest in New South Wales, the Australian Capital Territory, Victoria and Tasmania.