<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Betula nigra</topic></authority><related type="other"><topic>river birch</topic></related><related type="broader"><topic>Betula</topic></related><variant type="other"><topic>black birch</topic></variant><variant type="other"><topic>red birch</topic></variant><variant type="other"><topic>river birch</topic></variant><variant type="other"><topic>water birch</topic></variant> <note xml:lang="en"><![CDATA[ Species of ornamental tree found on riverbanks and swamps in the eastern one-third of the United States, growing 18-30 m (60 to 80 feet) in height. Because the lower trunk becomes very dark with age, the tree is sometimes called black birch. The red-brown, deeply furrowed bark on an old trunk breaks into ragged, closely appressed scales; the upper trunk and branches are smooth, salmon pink to rose cinnamon, with a metallic luster. ]]></note></mads>