''Trigonobalanus doichangensis'' is a species of

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...

in the family Fagaceae that can reach in height. It is only found at few sites in

Yunnan Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the C ...

in China and at one site in

Chiang Rai Chiang Rai ( th, เชียงราย, ; nod, , เจียงฮาย, ) is the northernmost major city in Thailand, with a population of about 200,000 people. It is located in Mueang Chiang Rai District, Chiang Rai Province. Chiang Rai ...

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...

. It is threatened by habitat loss and degradation. In China it is under second-class national protection.

References

Fagaceae Trees of Thailand Trees of China Data deficient plants Flora of Yunnan Taxonomy articles created by Polbot Taxa named by Aimée Antoinette Camus {{Fagales-stub