<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31456332</termId><termName>quercitron lake</termName><termType>PT</termType><termNote><![CDATA[ An obsolete yellow lake pigment made from quercitron, a natural dyestuff obtained from the black or dark brown bark of the black oak, containing the colorants: quercetin, quercetagetin, and flavine. Quercetin produces a bright yellow with aluminum and tin, a tan with chrome, and an olive green with iron. ]]></termNote><termCreatedDate>2026-03-30 21:02:50</termCreatedDate><relation><relationType>UF</relationType><termId>31456333</termId><termName>flavine lake</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31456334</termId><termName>lake, quercitron</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31437957</termId><termName>yellow lake</termName><termType>PT</termType></relation></term>  </Zthes>