Anthogonium is a monotypic genus of orchids. Its sole species, Anthogonium gracile, is found in India, Assam, Bangladesh, Nepal, Bhutan, Myanmar, Laos, Cambodia, Vietnam, Thailand, Malaysia, Guangxi, Guizhou, Tibet, and Yunnan.Flora of China, v 25 p 311, 筒瓣兰 tong ban lan, Anthogonium gracile
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Information from orchids online