NormanK's picture


Observed: 17th May 2011 By: NormanK
S159 Neighbourhood Nature - current student

Lichen on a new tree.


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

  • Confidence: It's likely to be this, but I can't be certain.
  • Confidence: It might be this.
Species interactions

No interactions present.


AlanS's picture


Yes, these are immature crustose species and they will not be producing spores yet.

Probably, as they develop, you will find you have two species, one producing black apothecia (disc-like fruitbodies), which will be Lecidella elaeochroma, and another with brown, distinctly margined apothecia, which will be Lecanora chlarotera.

Obviously this is just a prediction, but these two species are very common colonisers of young, smooth-barked trees. I call them the supermarket carpark lichens.


NormanK's picture



Thanks for that info.The one on the tree did appear fairly quickly, but I'm now going to monitor it and see how it develops, especially compared to a sightly different one on nearby brickwork. I like the supermarket carpark analogy!!

gardener's picture

Supermarket car park lichens, a question for Alan

Trees planted in supermarket car park's are often a good place to find lichens that like nitrogen-rich habitats - all those extra nutrients from car exhausts!
The trees usually have good levels of light reaching their trunks which helps lichen development too, as most don't colonise/survive in heavy shade.

A question for Alan:
I was recording lichens on urban trees last year - the planted (nursery grown) trees often had a good lichen flora but naturally occurring trees on the roadsides and surrounding the car parks didn't, even with similar light levels.

I wondered if nursery grown trees (home-grown and European imports) have a greater pre-disposition to develop lichens on them?