A new species of Polyalthia (Annonaceae) from China

* Author for correspondence. ABSTRACT. The new species Polyalthia zhui X. L. Hou & S. J. Li, found from Hainan and southern Guangdong in southern China, is described and il- lustrated. It has previously been confused with Po- lyalthia nemoralis A. DC. or P. littoralis (Blume) Boerlage in China, but is distinguished on the basis of its green fleshy ovate petals, outer petals spread- ing ca. 4 3 2.5 mm, inner petals not fully spread- ing, somewhat bent to the inside, ca. 5-6 3 4-4.2 mm, 1 mm thick or more, its carpels pilose only in the lower half, and its non-lobed stigma.