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