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NatureSpot Wildlife Guide
Common Lichens on Smooth-barked Tree Trunks

Many trees have smooth barked trunks when young, only developing thick and gnarly bark as they age. These trunks provide ideal habitat for a few very common lichens which are relatively easy to recognise. As with all lichens, a hand-lens makes identification easier, but isn't essential.

Photo of Lecanora chlarotera

Lecanora chlarotera

A very common lichen on smooth-barked trees, such as young Ash. Usually found growing together with Lecidella elaeochroma and Arthonia radiata.

ID: Pale grey with pale brown fruits

 

Photo of Lecidella elaeochroma

Lecidella elaeochroma

Very common on smooth bark, usually found growing with Lecanora chlarotela.

ID: Pale green with jet black fruits
 

Photo of Arthonia radiata

Arthonia radiata

Though common and often found with Lecanora chlarotela and Lecidella elaeochroma, it is harder to spot as it is smaller and pale.

ID: Grey with black, squiggly fruits

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Guide last updated in September 2023.