Didymoplexis pallens, commonly known as crystal bells[2] or 双唇兰 (shuang chun lan),[3] is a leafless terrestrial mycotrophic orchid in the family Orchidaceae.

The flowers are bell-shaped with the sepals and petals similar in size and shape and fused for about half their length.

Plants appear with the first rains of the wet season and flowers from November to March in Australia and from April to May in China.

[7][8] Crystal bells grows in rainforests, grassy forest and bamboo forest China, Taiwan, Afghanistan, Bangladesh, India, Myanmar, Indonesia, Japan, Malaysia, the Philippines, New Guinea, Thailand, Vietnam, Australia including Christmas Island and islands of the southwest Pacific.

In Australia it occurs on the Cape York Peninsula as far south as Cardwell, on some Torres Strait Islands, in northern parts of the Northern Territory and in the Kimberley region of Western Australia.