Christmas wreath lichen
... that the red pigment of the Christmas wreath lichen is one of several chemicals that help the organism survive inhospitable environments?
... that the red <a href="./Pigment" id="mwBg8" rel="mw:WikiLink" title="Pigment">pigment</a> of the <b id="mwBhA"><a href="./Cryptothecia_rubrocincta" id="mwBhE" rel="mw:WikiLink" title="Cryptothecia rubrocincta">Christmas wreath lichen</a></b> <i id="mwBhI">(pictured)</i> is one of several chemicals that help the organism survive inhospitable environments?