Quercus glauca

Ring-cupped oak
1874 illustration[1]
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Species: Q. glauca
Binomial name
Quercus glauca
Thunb. 1784 not F. Buerger ex Blume 1851 nor Martrin-Donos & Timb.-Lagr. 1864 nor Bosc ex Loisel. 1825 nor Oerst. 1869[2]
Synonyms[3]
Quercus glauca - MHNT

Quercus glauca (syn. Cyclobalanopsis glauca), also known as ring-cupped oak, Japanese blue oak or glaucous-leaf oak, is an Asian species in the genus Quercus in the beech family. It is native to eastern and southern Asia, mostly in China but also in neighboring countries (Afghanistan, Kashmir, northern and eastern India, Nepal, Bhutan, Myanmar, Vietnam, Korea, and southern Japan).[4]

Quercus glauca is a small to medium-sized evergreen broadleaf tree growing to 1520 m tall. The leaves are a distinct deep purple-crimson on new growth, soon turning glossy green above, glaucous blue-green below, 613 cm long and 25 cm broad, with a serrated margin. The flowers are catkins, and the fruit are acorns 11.6 cm long, with series of concentric rings on the outside of the acorn cup.[4]

Cultivation and uses

It is planted as an ornamental tree in regions of Europe and North America with mild winters.

References

External links

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