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Collema
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<p><i>Collema</i> (jelly lichen) is a <a href="/facts/Genus/m8EFjSms">genus</a> of <a href="/facts/Lichen/cfbt9vjj">lichens</a> in the <a href="/facts/Family_(biology)/qTrn6E8E">family</a> <a href="/facts/Collemataceae/2CPwVCMS">Collemataceae</a>. The <a href="/facts/Photobiont/lUrd6Sn7">photobiont</a> is the <a href="/facts/Cyanobacterium/S8bKxIU9">cyanobacterium</a> genus <i><a href="/facts/Nostoc/WoDSJKYR">Nostoc</a></i>. Species in this genus typically grow on nutrient-rich bark or somewhat siliceous or calcareous rocks in humid environments. </p>