Rhoiptelea

Rhoiptelea is a monotypic genus of flowering plants in the family Juglandaceae, containing the single species Rhoiptelea chiliantha, commonly known as the horsetail tree. It is native to southwestern China (Guangxi, Guizhou, Yunnan) and the far north of Vietnam, and grows at altitudes of 700-2,500 metres in mountainous areas.