The genus is distributed in Southeast Asia, Australia, Micronesia and Melanesia.

Orchids in the genus Dienia are evergreen, sympodial, mostly terrestrial plants with fleshy, above-ground stems, although a few species are epiphytes.

The flowers are green, brown, yellow, pink, or purple and have narrow sepals and petals.

[2][3][4][5] The genus Dienia was first formally described in 1824 by John Lindley and the description was published in The Botanical Register.

[4] The following is a list of species of Dienia recognised by the Plants of the World Online as at 1 June 2023:[1] Dienia are found in the Philippines, Sumatra, China, the Indian subcontinent, East Asia, Malesia, New Guinea and Australia.