Quercus augustinii

{{Short description|Species of oak tree}}

{{Speciesbox

|image =

|genus = Quercus

|display_parents = 2

|parent = Quercus sect. Cyclobalanopsis

|species = augustinii

|authority = Skan

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/kew-171687 The Plant List, Quercus augustini Skan ][http://www.tropicos.org/Name/13101215 Tropicos, Quercus augustinii Skan ]

|synonyms = {{collapsible list|bullets = true

|title=Synonymy

|Quercus augustini Skan

|Cyclobalanopsis augustini (Skan) Schottky

|Cyclobalanopsis augustinii (Skan) Schottky

|Cyclobalanopsis nigrinux Hu

|Pasania chiwui Hu

|Quercus glabricupula Barnett

}}}}

Quercus augustinii is a rare species of tree in the beech family Fagaceae. It has been found in Vietnam as well as Guangxi, Guizhou, and Yunnan Provinces in southern China.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210000351 Flora of China, Cyclobalanopsis augustinii (Skan) Schottky, 1912. 窄叶青冈 zhai ye 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 augustinii is a tree up to 10 m. tall, with orange-brown twigs and leaves as much as 120 mm long. The acorn is oblong-ovoid, 10-17 × 8-12 mm, glabrous, apex rounded or slightly depressed; scar approx. 6 mm in diameter.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210000350 Flora of China, Cyclobalanopsis argyrotricha (A. Camus) Chun & Y. T. Chang ex Y. C. Hsu & H. W. Jen, 1993. 贵州青冈 gui zhou qing gang ][https://www.biodiversitylibrary.org/page/169709#page/543/mode/1up Skan, Sidney Alfred in Forbes, Francis Blackwell & Hemsley, William Botting 1899. Journal of the Linnean Society, Botany 26(178): 507] description in Latin, commentary in English