''Cephalotaxus hainanensis'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of conifer known by the common name Hainan plum-yew. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to the island of

Hainan Hainan (, ; ) is the smallest and southernmost province of the People's Republic of China (PRC), consisting of various islands in the South China Sea. , the largest and most populous island in China,The island of Taiwan, which is slightly l ...

in southern China. It is possibly a synonym of ''

Cephalotaxus mannii ''Cephalotaxus mannii'' is a species of plant in the family Taxaceae. It is a tree up to about tall, native to southern China, northeast India, Laos, northern Thailand, northern Myanmar and northern Vietnam Northern Vietnam ( vi, Bắc Bộ ...

''. This species grows in warmer temperate and subtropical rainforest habitat. When mature it is a tree 10 to 20 meters tall. It is sometimes a dominant species in the local ecosystem. ''C. hainanensis'' is suggested to have antileukemia activity, and is widely used as an herbal remedy in China. Exploitation of the bark and leaves is a potential threat to this species. Logging has historically been a cause of its decline, but as logging is no longer allowed on Hainan, much of the pressure is currently from illegal harvesting for Chinese remedies.

References

{{Taxonbar, from=Q3439489 Trees of China Endemic flora of China hainanensis Endangered plants Plants described in 1953