Quercus pentacycla

{{Short description|Species of oak tree}}

{{Speciesbox

|image =

|genus = Quercus

|display_parents = 2

|parent = Quercus sect. Cyclobalanopsis

|species = pentacycla

|authority = Y.T.Chang

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/kew-174355 The Plant List, Quercus pentacycla Y.T.Chang]

|synonyms = *Cyclobalanopsis pentacycla (Y.T.Chang) Y.T.Chang ex Y.C.Hsu & H.Wei Jen

}}

Quercus pentacycla is an uncommon Asian species of tree in the beech family Fagaceae. It has been found only in the Province of Yunnan in southwestern China.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210000399 Flora of China, Cyclobalanopsis pentacycla (Y. T. Chang) Y. T. Chang ex Y. C. Hsu & H. W. Jen, 1976. 五环青冈 wu huan qing gang ] It is placed in subgenus Cerris, section Cyclobalanopsis.{{Cite web |last1=Denk |first1=Thomas |last2=Grimm |first2=Guido W. |last3=Manos |first3=Paul S. |last4=Deng |first4=Min |last5=Hipp |first5=Andrew L. |date=2017 |title=Appendix 2.1: An updated infrageneric classification of the oaks |website=figshare |doi=10.6084/m9.figshare.5547622.v1 |url=https://figshare.com/articles/dataset/Appendix_2_1_________An_updated_infrageneric_classification_of_the_oaks/5547622/1 |access-date=2023-02-24 |format=xls |name-list-style=amp }}

Quercus pentacycla is a tree up to 15 meters tall. Twigs are grayish brown. Leaves can be as much as 14 cm long.