Quercus glauca
In this article, we will thoroughly explore Quercus glauca and its impact on today's society. From its origins to its relevance today, Quercus glauca has played a crucial role in various aspects of everyday life. Throughout history, Quercus glauca has been the subject of study, debate and controversy, which has led to a greater understanding of its importance and relevance in different areas. Through this comprehensive analysis, we hope to shed light on the different aspects of Quercus glauca and its influence on modern society. Quercus glauca will undoubtedly continue to be a topic of interest in the future, and it is essential to understand its impact in today's world.
| Ring-cupped oak | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Subgenus: | Quercus subg. Cerris |
| Section: | Quercus sect. Cyclobalanopsis |
| Species: | Q. glauca
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| Binomial name | |
| Quercus glauca | |
| Synonyms[2] | |
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List
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Quercus glauca (syn. Cyclobalanopsis glauca), commonly called ring-cupped oak or Japanese blue oak,[3] is a tree in the beech family (Fagaceae). It is native to eastern and southern Asia, where it is found in Afghanistan, Bhutan, China, northern and eastern India, southern Japan, Kashmir, Korea, Myanmar, Nepal, and Vietnam.[4] It is placed in subgenus Cerris, section Cyclobalanopsis.[5]
Description
Quercus glauca is a small to medium-sized evergreen broadleaf tree growing to 15–20 m tall. The leaves are a distinct deep purple-crimson on new growth, soon turning glossy green above, glaucous blue-green below, 60–13 mm long and 20–50 mm broad, with a serrated margin. The flowers are catkins, and the fruit are acorns 1–1.6 cm long, with series of concentric rings on the outside of the acorn cup (it is in the "ring-cupped oak" sub-genus).[4]
Cultivation and uses
It is planted as an ornamental tree in regions of Europe and North America with mild winters.
Its acorns are edible. When dried and ground into powder they can be mixed with cereals and used as flour. The roasted seeds can be used as a coffee substitute. The wood of Quercus glauca is a valuable fuelwood. Its leaves and stems are relished by deer.[6]
Gallery
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Detail of acorns and buds -
Dried leaves and acorns
References
- ^ Tropicos, Quercus glauca
- ^ "Quercus glauca Thunb.". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew – via The Plant List. Note that this website has been superseded by World Flora Online
- ^ Quercus glauca[permanent dead link] North Carolina State University
- ^ a b Huang, Chengjiu; Zhang, Yongtian; Bartholomew, Bruce. "Cyclobalanopsis glauca". Flora of China. Vol. 4 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ 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.
- ^ Heuzé V., Tran G., Lebas F., 2017. Blue Japanese oak (Quercus glauca). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. https://www.feedipedia.org/node/109
External links
- photo of herbarium specimen at Missouri Botanical Garden collected in China in 1977
- photo of herbarium specimen at Missouri Botanical Garden, collected in Myanmar (Burma) in 1961, showing rings on acorn cups
Media related to Quercus glauca at Wikimedia Commons
Data related to Quercus glauca at Wikispecies
