Psilopeganum

Psilopeganum is a genus of flowering plants of the family Rutaceae.

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It is a monotypic genus, with only a single species: Psilopeganum sinense Hemsl. (Chinese: 山麻黄; pinyin: shān má huáng, not to be confused with ma huang). It is native to the Three Gorges Reservoir area, in the Hubei province of central China, where it has become endangered. A specimen exists at the New York Botanical Garden.[1]

P. sinense is one of the 50 fundamental herbs used in traditional Chinese medicine.