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Calicium adspersum is a crustose species growing mostly on old oaks but also occasionally on a few other deciduous trees. Often on the north side but avoiding moist substrates. It follows the distribution of oak in Sweden and is a indicator of oaks that often have other rare lichen species. Red-listed in Norway, Finland, England and Germany

Responsible for this page: Agneta Johansson
Last updated: 05/26/07