Article · Wikipedia archive · Last revised Jun 6, 2026

Quercus rex

Quercus rex is an Asian species of tree in the family Fagaceae. It has been found in the seasonal tropical forests of northern Indochina, northeastern India, and also in the province of Yunnan in southwestern China. It is placed in subgenus Cerris, section Cyclobalanopsis.

Last revised
Jun 6, 2026
Read time
≈ 1 min
Length
328 w
Citations
7
Source
Wikipedia ↗
Quercus rex
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Cerris
Section: Quercus sect. Cyclobalanopsis
Species:
Q. rex
Binomial name
Quercus rex
Synonyms2
  • Cyclobalanopsis fructiseptata (A.Camus) Hjelmq.
  • Cyclobalanopsis rex (Hemsl.) Schottky
  • Quercus dussaudii Hickel & A.Camus
  • Quercus fructiseptata A.Camus
  • Quercus subumbilicata A.Camus

Quercus rex is an Asian species of tree in the family Fagaceae. It has been found in the seasonal tropical forests of northern Indochina (Laos, Myanmar, Vietnam), northeastern India, and also in the province of Yunnan in southwestern China.3 It is placed in subgenus Cerris, section Cyclobalanopsis.4

Quercus rex is a large tree up to 30 m. tall. Twigs are pale brown with a woolly coating of hairs. Leaves can be as much as 270 mm long.35 The acorn is oblate, 25-35 × 35–50 mm, pale greyish-orange and tomentose when young; the apex is rounded to impressed; the scar is 20–25 mm in diameter and depressed. In China, flowering is in April–May, acorns are found from October–November.3

References

References

  1. Carrero, C. (2019). "Quercus rex". IUCN Red List of Threatened Species. 2019 e.T32396A2817544. Retrieved 24 January 2023.
  2. The Plant List, Quercus rex Hemsl.
  3. Flora of China, Cyclobalanopsis rex (Hemsley) Schottky, 1912. 大果青冈 da guo qing gang
  4. Denk, Thomas; Grimm, Guido W.; Manos, Paul S.; Deng, Min & Hipp, Andrew L. (2017). "Appendix 2.1: An updated infrageneric classification of the oaks" (xls). figshare. doi:10.6084/m9.figshare.5547622.v1. Retrieved 2023-02-24.
  5. Hemsley, William Botting 1900. Hooker's Icones Plantarum 27(3): plate 2663 and subsequent unnumbered text page 2- page fold-out line drawing, description in Latin, commentary and figure captions in English
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