A flavonol containing many hydroxyl groups, found as its glucoside in plants, including the bark of the American oak Quercus tinctoria
It is used as a dye.
Of or pertaining to the oak; made of oak, oaken.
Referring to, or designating, a tannic acid found in oak bark and extracted as a yellowish brown amorphous substance.
A white crystalline substance found in acorns, the fruit of the oak (Quercus).
It has a sweet taste, and is regarded as a pentacid (combining with, five molecules of a monobasic acid) alcohol.
A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron.
1. The yellow inner bark of the Quercus tinctoria, the American black oak, yellow oak, dyer's oak, or quercitron oak, a large forest tree growing from Maine to eastern Texas.
2. Quercitrin, used as a pigment.
A medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad 5-lobed leaves are bristle-tipped.
Feeding on the leaves of oak trees.
A highly variable, often shrubby, evergreen oak on the coastal zone of western North America having small thick usually spiny-toothed dark-green leaves.
A medium to large deciduous tree of the eastern United States.
Its durable wood is used as timber or split and woven into baskets or chair seats.
A medium-sized evergreen oak of southern Europe and northern Africa having thick corky bark that is periodically stripped to yield commercial cork.
A medium to large deciduous tree of China, Japan, and Korea having a thick corky bark.
A medium-sized evergreen native to eastern North America to the east coast of Mexico.
Often cultivated as shade tree for its wide-spreading crown and extremely hard tough durable wood which was once used in shipbuilding.
A medium-small shrubby evergreen tree of western North America similar to the coast live oak but occurring chiefly in foothills of mountain ranges removed from the coast; an important part of the chaparral.
quercus, white oak bark
The dried inner bark of Quercus alba
, white oak.
It contains tannic acid, pectin, and resin, and it is used as an astringent.