twisted sun orchid

The twisted sun orchid (Thelymitra flexuosa) is a species of terrestrial perennial plant belonging to the genus Thelymitra, which is part of the orchid family Orchidaceae. This genus, comprising about 100 species, is found throughout Australasia. Sun orchids are named for their characteristic of remaining closed except in strong sunlight, though some species are self-pollinating and never open their flowers.1

Unlike most orchids, sun orchid flowers lack a central labellum, meaning all three petals and sepals appear similar. They also possess a hooded column with unique appendages. The twisted sun orchid is a common species found in Australia.1