2007
NS4274 : A lichen - Physcia aipolia
taken 17 years ago, near to Milton, West Dunbartonshire, Scotland
A lichen - Physcia aipolia
This is a common species that is often found on branches and twigs; the large spore-producing discs (apothecia) are a prominent feature.
This specimen was growing on a branch right beside the cycle route. This species prefers near-neutral bark (the bark of many trees is markedly acidic), but trees near tracks (especially farm tracks) are often exposed to lime-rich dust that can act to neutralize the acidity of bark to some extent.
For other Physcia species, see:
NS3678 : A lichen - Physcia adscendens.
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