<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31468798</termId><termName>Populus tremula</termName><termType>PT</termType><termNote><![CDATA[ Species of hardy, medium-sized poplar tree native to cool temperate regions of Europe and Asia, including the British Isles. The bark is pale greenish-gray, smooth on young trees with dark grey diamond-shaped lenticels. It turns darker and fissured on old trees. The leaves are especially liable to the tremulous motion common to all poplars, thus the name of the species; leaves have an unpleasant taste that discourages denuding by fallow deer. The wood has large, evenly-distributed pores that produce a soft fibrous texture, making it valuable for only limited use. ]]></termNote><termCreatedDate>2026-03-30 21:06:13</termCreatedDate><relation><relationType>UF</relationType><termId>31468799</termId><termName>Eurasian aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468800</termId><termName>European aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468801</termId><termName>asp</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468802</termId><termName>aspen poplar</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468803</termId><termName>common aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468804</termId><termName>quivering aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468805</termId><termName>shaking aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468806</termId><termName>trembling aspen</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31468807</termId><termName>trembling poplar</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31454978</termId><termName>Populus</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31468810</termId><termName>Populus tremuloides</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31470493</termId><termName>European aspen</termName><termType>PT</termType></relation></term>  </Zthes>