''Quercus annulata'' is a tree species in the beech 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. It is placed in subgenus ''Cerris'', section ''Cyclobalanopsis''. This oak tree has oblong, caudate leaves, 100–120 mm with

glaucous ''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), g ...

undersides.Phạm Hoàng Hộ (2003) ''Cây Cỏ Việt Nam: an Illustrated Flora of Vietnam'' vol. II publ. Nhà Xuẩt Bản Trẻ, HCMC, VN It has been recorded from the

Himalayas The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over ...

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 ...

: the latter in the Phan Xi Păng area, where it may be called ''sồi vòng''.

References

A.Rees, 1819 ''In: Cycl. 29: 22'' WCSP: World Checklist of Selected Plant Families
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External links

{{Taxonbar, from=Q15246005 annulata Flora of Indo-China Trees of Vietnam