Quercus hypophaea

{{Short description|Species of oak tree}}

{{Speciesbox

| image = Quercus Hypophaea.jpg

| genus = Quercus

| display_parents = 2

| parent = Quercus sect. Cyclobalanopsis

| species = hypophaea

| authority = Hayata 1913

| synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/kew-173146 The Plant List, Quercus hypophaea Hayata ]

| synonyms = *Cyclobalanopsis hypophaea (Hayata) Kudô

• Cyclobalanus hypophaea (Hayata) Nakai
• Lithocarpus hypophaeus (Hayata) Hayata
• Pasania hypophaea (Hayata) H.L.Li

}}

Quercus hypophaea is an uncommon species of tree in the beech family Fagaceae. It has been found only in Taiwan.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210000377 Flora of China, Cyclobalanopsis hypophaea (Hayata) Kudo, 1931. 绒毛青冈 rong mao qing gang ] It is placed in subgenus Cerris, section Cyclobalanopsis.{{Cite journal |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 hypophaea is a tree up to 18 meters tall with whitish twigs. Leaves can be as much as 10 cm long.