Thelymitra campanulata, commonly called the “bell sun orchid” or “shirt orchid”, is a species of orchid in the family Orchidaceae and is endemic to the south-west of Western Australia. It is a common species with a single narrow leaf and up to fifteen distinctly cup-shaped, prominently striped blue or mauve flowers with crowded, finger-like glands on top of the anther. Todays stamp showing the “shirt orchid” is from Australia and was issued in 2014.