Reference comment Abundant; on rock in open sites; beaches to alpine. Also common on bark and lignum of conifers and deciduous shrubs (''[[Alnus]]'', ''[[Malus|Malus fusca]]'') in many forest types, particularly ''[[Pinus contorta]]'' peatlands and forest edges.
From Natural History of Southeast Alaska
A list of all pages that have property "Reference comment" with value "Abundant; on rock in open sites; beaches to alpine. Also common on bark and lignum of conifers and deciduous shrubs (''[[Alnus]]'', ''[[Malus|Malus fusca]]'') in many forest types, particularly ''[[Pinus contorta]]'' peatlands and forest edges."
