Phaius

Genus of orchids

Automatic taxobox
| name = Swamp orchids
| image = Phaius rosellus (1847). jpg
| image caption = Phaius rosellus1847 illustration
| display parents = 2
| taxon = Phaius
| authority = Lour. | synonyms ref = or in Chinese as 鶴頂蘭屬/鹤顶兰属 (he ding lan shu), is a genus of forty five species of flowering plants in the orchid family, Orchidaceae. They are evergreen, terrestrial herbs which form clumps with crowded, sometimes stem like pseudobulbs, large, pleated leaves and relatively large, often colourful flowers. Species in this genus are found in the tropical parts of Africa, Asia, Southeast Asia, New Guinea, Australia, and various islands of the Pacific and Indian Oceans.

Orchids in the genus Phaius are evergreen, terrestrial, sympodial herbs with thin underground rhizomes and crowded above ground, sometimes stem like pseudobulbs. There are several pleated, stalked leaves emerging from the pseudobulb. The flower stalk is unbranched and bears a few to many moderately large, resupinate, often colourful flowers. The sepals and petals are similar in size and shape and the labellum has three lobes and a shallow pouch near its base.

Orchids in the genus Phaius are found in tropical Africa, India, tropical and subtropical China, Malaysia, the Philippines, Indonesia, New Guinea, New Caledonia, Polynesia and Australia. Nine species, four of which are endemic, occur in China and three species including two endemics are found in Australia. The Australian species are found in Queensland, the Northern Territory and New South Wales.