Quercus chrysocalyx
{{Short description|Species of oak tree}}
{{Speciesbox
| image =
| genus = Quercus
|display_parents = 2
|parent = Quercus sect. Cyclobalanopsis
| species = chrysocalyx
| authority = Hickel & A.Camus
| range_map =
| range_map_caption =
| synonyms = Cyclobalanopsis chrysocalyx (Hickel & A.Camus) Hjelmq.
}}
Quercus chrysocalyx is a tree species in the beech family Fagaceae; there are no known subspecies. It is native to Cambodia, China (Yunnan), Laos, Thailand, and Vietnam.{{Cite web|title=Quercus chrysocalyx Hickel & A.Camus {{!}} Plants of the World Online {{!}} Kew Science|url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:359498-1|website=Plants of the World Online|access-date=2020-05-21}} It is placed in subgenus Cerris, section Cyclobalanopsis (the ring-cupped oaks).{{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 }}
This oak tree grows up to 15 m tall, with large acorns – 25–30 mm, and has been recorded from Vietnam, where it may be called sồi quang.Phạm Hoàng Hộ (2003) Cây Cỏ Việt Nam: an Illustrated Flora of Vietnam vol. II publ. Nhà Xuẩt Bản Trẻ, HCMC, VN
Taxonomy & naming
Quercus chrysocalyx was first described in 1921 by Paul Robert Hickel and Aimée Antoinette Camus. The species epithet, chrysocalyx, is derived from the Greek chrysos ("gold") and kalyx, ("cup" or "calyx"), and describes the plant as having golden calyces.{{cite book|date=1830|pages=157|title=Florae Senegambiae tentamen, seu, Historia plantarum in diversis Senegambiae regionibus a peregrinatoribus Perrottet et Leprieur detectarum|url=https://www.biodiversitylibrary.org/page/6464413|language=fr|author=Perrottet, G.S. & Guillemin, J.B.A.}}Backer, C.A. (1936) [https://www.dbnl.org/tekst/back062verk02_01/back062verk02_01_0001.php Verklarend woordenboek der wetenschappelijke namen van de in Nederland en Nederlandsch-Indië in het wild groeiende en in tuinen en parken gekweekte varens en hoogere planten (Edition Nicoline van der Sijs).] (Explanatory dictionary of the scientific names of .. plants grown in the Netherlands and the Dutch East Indies...)
References
{{reflist|refs=
[http://apps.kew.org/wcsp/home.do WCSP: World Checklist of Selected Plant Families]
}}
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