Kingdonia

Kingdonia uniflora is a species of perennial herbs native to China. The plants have one leaf and a short (100 mm) flower stalk with a small (8 mm) flower.
It grows at high elevations in West and North China. Most of the plants are found in West Yunan. "Kingdonia uniflora" is an endangered species.
Classification.
"Kingdonia" is sometimes classified as the only genus in the family Kingdoniaceae or as a member of the family Circaeasteraceae along with "Circaeaster agrestis", specifically in the APG III system of classification. Other sources may classify "Kingdonia" in the buttercup family Ranunculaceae. In any case it is in the order Ranunculales.