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,[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]
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]
^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
