Praecoxanthus aphyllus is a terrestrial, perennial, deciduous, sympodial herb with a few inconspicuous, fine roots and a tuber partly surrounded by a fibrous sheath.

Flowering occurs from March to May and the fruit that follows is a non-fleshy, hairy, dehiscent capsule containing a large number of seeds.

[2][3][4]Leafless orchid was first formally described in 1837 by George Bentham who gave it the name Caladenia aphylla and published the description in Flora Australiensis.

The yellow calli on a purple labellum resemble pollen-bearing stamens but the flower is nectarless,[4] attracting the insects to an absent reward.

[11][12] Praecoxanthus aphyllus is classified as "Not Threatened" by the Western Australian Government Department of Parks and Wildlife.