Gastrodia

Gastrodia
Gastrodia elata in bloom
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Epidendroideae
Tribe:	Gastrodieae
Subtribe:	Gastrodiinae
Genus:	Gastrodia R. Br.
Synonyms
Gamoplexis Falc. Epiphanes Blume Neoclemensia Carr Demorchis D.L.Jones & M.A.Clem.

Gastrodia is a genus of achlorophyllous orchids with 64 currently accepted species. They are native to Asia (China, the Russian Far East, Japan, Korea, Southeast Asia, the Indian Subcontinent), Australia, New Zealand, central Africa, and various islands of the Indian and Pacific Oceans.

Gastrodia elata is a traditional Chinese herb, Tian Ma (Chinese: 天麻), and is commonly used in China to treat hypertension, improve circulation and resolve headaches.

Species accepted as of December 2016:

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Wikipedia