Circaeasteraceae is a family of two species of herbaceous plants native to China and the Himalayas. The family has been recognized by many taxonomists. The APG II system (2003; unchanged from the APG system of 1998), recognizes it and places it in the order Ranunculales in the clade eudicots. It treats the family to consist of two genera each with a single species, ''

Circaeaster agrestis ''Circaeaster agrestis'' is a flowering plant species and one of only one to two species in its family, the Circaeasteraceae. The plant is a small, glabrous herb found in temperate zones from the northwest Himalaya to northwest China Ch ...

'' and ''

Kingdonia uniflora ''Kingdonia uniflora'' is a species of perennial herb native to China. The plants have one leaf and a flower stalk with a flower. It grows at high elevations in West and North China. Most of the plants are found in western Yunnan. It is an e ...

'', but allows the option of segregating the latter species as family Kingdoniaceae. The

APG III system The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy being developed by the Angiosperm Phylogeny Group (APG). Published in 2009, it was superseded in 2016 by a fur ...

of 2009 also recognizes the two species but no longer allows the optional segregation into Kingdoniaceae.

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