''Quercus macrocalyx'' is the accepted name of a tree species in the Asian sub-genus of ' ring-cupped oaks' and the family

Fagaceae The Fagaceae are a family of flowering plants that includes beeches, chestnuts and oaks, and comprises eight genera with about 927 species. Fagaceae in temperate regions are mostly deciduous, whereas in the tropics, many species occur as eve ...

; there are no known subspecies. This oak tree grows up to 20 m tall and has been recorded from

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making it ...

, where it may be called ''sồi đấu to''.Phạm Hoàng Hộ (2003) ''Cây Cỏ Việt Nam: an Illustrated Flora of Vietnam'' vol. II publ. Nhà Xuẩt Bản Trẻ, HCMC, VN

References

Hickel & A.Camus, 1921 ''In: Ann. Sci. Nat., Bot. , X, 3: 383'' WCSP: World Checklist of Selected Plant Families
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External links

* {{Taxonbar, from=Q6324187 macrocalyx Flora of Indo-China Trees of Vietnam Taxa named by Aimée Antoinette Camus