Diuris

Diuris is a genus of orchids commonly known as donkey orchids or native tulips. These plants are found throughout Australia, with a few species extending into New Guinea. They are characterized by their distinctive, often brightly colored flowers that are said to resemble the face of a donkey or a small tulip. The genus contains approximately 50 species, and many are highly localized in their distribution.

Diuris orchids are terrestrial herbs that grow from underground tubers. They typically have one or two basal leaves, which are usually linear or lance-shaped and can be either evergreen or deciduous. The flowering stems are erect and bear one to several flowers. The flowers themselves are zygomorphic, meaning they are bilaterally symmetrical, and possess a unique structure. They typically have a prominent labellum, which is divided into three lobes, and two erect, ear-like petals called "labellum lobes" or "auricles" that contribute to the common names. The sepals and other petals are usually reflexed or spreading.

These orchids inhabit a wide range of environments, from woodlands and grasslands to more open scrublands and heathlands. They often prefer well-drained soils and can be found in sandy, loamy, or even rocky substrates. The flowering period for Diuris orchids varies depending on the species and geographical location, but generally occurs during the spring and early summer months. Pollination is often carried out by native bees, attracted by the visual display and sometimes a faint fragrance. Conservation status varies among species, with some being common while others are rare or endangered due to habitat loss and other threats.