quercitron

[ kwur-si-truhn ]

/ ˈkwɜr sɪ trən /

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noun

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.

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Origin of quercitron

1785–95; <Latin quer(cus) oak + citron

In winter they are passed through a slightly chalky water, then washed at the wheel, and dyed in quercitron or weld.
A Dictionary of Arts, Manufactures and Mines|Andrew Ure
A very minute proportion of quercetin, a principle yielded by quercitron bark, has been obtained from catechu.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5|Various
Some of the latter is so deficient as to afford colours nearly as fugitive as those of Brazil wood and quercitron.
A Dictionary of Arts, Manufactures and Mines|Andrew Ure
According to Bancroft, Quercitron is the yellow above all others for dyeing greens.
Vegetable Dyes|Ethel M. Mairet

The same mordants, with a dye of quercitron bark, give yellow and olive or drab.
Popular Technology, Vol. I (of 2)|Edward Hazen