<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">Betulaceae</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31435634</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:57:28</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">birch family</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Betulaceae is the birch family of flowering plants, usually placed in the order Fagales; some authorities, however, have placed the family in the order Betulales. The family contains six genera and 120-150 species. Although not done in this hierarchy, it is elsewhere sometimes divided into two subfamilies: Betuloideae, with the genera Betula (birch) and Alnus (alder); and Coryloideae, with the genera Carpinus (hornbeam), Corylus (hazel, or filbert), Ostrya, and Ostryopsis. ]]></dc:description></metadata>