| 词条 | Quercus glauca |
| 释义 |
| name = Ring-cupped oak | image = Quercus glauca Bra65.png | image_caption = 1874 illustration[1] | image2 = | image2_caption = | genus = Quercus | parent = Quercus subg. Cyclobalanopsis | species = glauca | authority = Thunb. 1784 not F. Buerger ex Blume 1851 nor Martrin-Donos & Timb.-Lagr. 1864 nor Bosc ex Loisel. 1825 nor Oerst. 1869[2] | synonyms_ref = [3] | synonyms = {{collapsible list|bullets = true |Cyclobalanopsis amamiana (Hatus.) Masam. |Cyclobalanopsis glauca (Thunb.) Oerst. |Cyclobalanopsis globosa T.P.Lin & T.S.Liu |Cyclobalanopsis repandifolia (J.C.Liao) J.C.Liao |Cyclobalanopsis sasakii (Kaneh.) Kudô & Masam. |Cyclobalanopsis vibrayana (Franch. & Sav.) Schottky |Perytis glauca (Thunb.) Raf. |Quercus amamiana Hatus. |Quercus bambusifolia Fortune 1860 not Hance 1857 |Quercus dentosa Lindl. ex Wall. name published without description |Quercus globosa (T.P.Lin & T.S.Liu) J.C.Liao |Quercus ichangensis Nakai ex A.Camus |Quercus lacera Blume |Quercus laxiflora Lindl. ex Wall. name published without description |Quercus longipes Hu 1951, not Steven 1857 |Quercus lotungensis Chun & W.C.Ko |Quercus matasii Siebold |Quercus repandifolia J.C.Liao |Quercus sasakii Kaneh. |Quercus tranninhensis Hickel & A.Camus |Quercus vaniotii H.Lév. |Quercus vibrayeana Franch. & Sav. }}Quercus glauca (syn. Cyclobalanopsis glauca), commonly called ring-cupped oak or Japanese blue oak[4], is a tree in 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.[5] DescriptionQuercus 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).[5]Cultivation and usesIt 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] GalleryReferences1. ^illustration from D. Brandis, Illustrations of the Forest Flora of North-West and Central India, 1874 2. ^Tropicos, Quercus glauca 3. ^{{ThePlantList |id=kew-172924 |taxon=Quercus glauca |authority=Thunb.}} 4. ^[https://plants.ces.ncsu.edu/plants/all/quercus-glauca/ Quercus glauca] North Carolina State University 5. ^1 {{eFloras|2|210000372|Cyclobalanopsis glauca |first1=Chengjiu |last1=Huang |first2=Yongtian |last2=Zhang |first3=Bruce |last3=Bartholomew |volume=4}} 6. ^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
6 : Quercus|Trees of Asia|Flora of Indo-China|Trees of Vietnam|Plants described in 1784|Trees of Nepal |
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