Corylus yunnanensis

{{Short description|Species of tree}}

{{Speciesbox

| image = Corylus yunnanensis - Quarryhill Botanical Garden - DSC03773.JPG

| genus = Corylus

| species = yunnanensis

| authority = (Franch.) A.Camus

| synonyms = Corylus heterophylla var. yunnanensis

|status=LC

|status_system=IUCN3.1

|status_ref={{cite iucn |author=Shaw, K. |author2=Roy , S. |author3=Wilson, B. |date=2014 |title=Corylus yunnanensis |volume=2014 |page=e.T194559A2349249 |doi=10.2305/IUCN.UK.2014-3.RLTS.T194559A2349249.en |access-date=12 November 2021}}

}}

Corylus yunnanensis, the Yunnan hazel, is a species of hazelnut found in western China. It is a small tree or shrub.{{cite journal |last1=Helmstetter |first1=Andrew J. |last2=Buggs |first2=Richard J. A. |last3=Lucas |first3=Stuart J. |title=Repeated long-distance dispersal and convergent evolution in hazel |journal=Scientific Reports |date=2019 |volume=9|issue=1 |page=16016 |doi=10.1038/s41598-019-52403-2 |pmid=31690762 |pmc=6831691 |bibcode=2019NatSR...916016H }} The flowers have triangular shaped petals. The round nuts which are encased in a very tough oval shaped shell and can be consumed by humans. The plant is not commercially grown for the nuts, rather they are sometimes used as ornamental plants. They are located in Western Guizhou, Hubei, South Western and Western Sichuan, and Western Yunnan.