Truongsonia is a genus of palms. It includes a single species, Truongsonia lecongkietii, which is endemic to Vietnam.
It is a small palm known only from a small area of Quảng Ngãi province in central Vietnam. It grows in forest understorey on steep slopes near streams in primary evergreen broadleaf forest at about 1000 meters elevation.Andrew Henderson, The Discovery of Truongsonia, Palms Vol. 67(4) 2023
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