description Lecanora conizaeoides Overview
Lecanora conizaeoides is a crustose lichen and an obligate acidophile, growing on acidic bark, wood, siliceous rock, walls, decaying plant material, peat, and other low-pH substrates. In western and central Europe it became abundant during periods of high sulfur dioxide pollution because the pollutant acidified surfaces that excluded many competing lichens. Its abundance declined as sulfur dioxide emissions and substrate acidity fell.
help Lecanora conizaeoides FAQ
What does it mean that Lecanora conizaeoides is an obligate acidophile?
It means Lecanora conizaeoides strongly favors substrates with a low pH and is rarely found on alkaline surfaces. It can grow on acidic bark, wood, peat, decaying plant material, and siliceous rock.
Why was Lecanora conizaeoides common during heavy air pollution?
During the twentieth century, sulfur dioxide pollution acidified bark and other surfaces across parts of western and central Europe. Lecanora conizaeoides tolerated those acidic conditions better than many competing lichens.
Where should I look for Lecanora conizaeoides?
Search acidic tree bark, old wood, acidic walls, siliceous rock, peat, and decaying vegetation. The species is crustose, so it forms a closely attached surface layer rather than leafy lobes.
Why did Lecanora conizaeoides decline after air pollution fell?
Cleaner air reduced sulfur dioxide and allowed bark surfaces to become less acidic. Even a modest increase in substrate pH can cause this acid-loving lichen to lose abundance.
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