quercitron

/kwur-si-truhn/US // ˈkwɜr sɪ trən //

槲寄生,槲树,槲寄生属,槲寄生属植物

Definitions

n.名词 noun

1
- : an oak, Quercus velutina, of eastern North America, the inner bark of which yields a yellow dye.
- : the bark itself.
- : the dye obtained from this bark.

In winter they are passed through a slightly chalky water, then washed at the wheel, and dyed in quercitron or weld.
A very minute proportion of quercetin, a principle yielded by quercitron bark, has been obtained from catechu.
Some of the latter is so deficient as to afford colours nearly as fugitive as those of Brazil wood and quercitron.
According to Bancroft, Quercitron is the yellow above all others for dyeing greens.
The same mordants, with a dye of quercitron bark, give yellow and olive or drab.