Pin lichen
A pin lichen, or calicoid lichen, is a crustose lichen with small fruiting bodies pointing up that look like a dressmaker's pin. It includes members of the lichen genera Calicium and Chaenotheca.
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Wikipedia
A pin lichen, or calicoid lichen, is a crustose lichen with small fruiting bodies pointing up that look like a dressmaker's pin. It includes members of the lichen genera Calicium and Chaenotheca.