It has a single erect, dark green leaf and up to nine relatively small, blue to purplish or white flowers.

The side lobes curve gently upwards and have toothbrush-like tufts of white hairs with a glandular tip.

[2][3][4][5][6] Thelymitra vulgaris was first formally described in 2004 by Jeff Jeanes and the description was published in Muelleria.

It is found from Geraldton to Esperance and is especially common in swampy place between Manjimup and Mount Barker.

[2][3][9] Thelymitra vulgaris is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.