na3643's picture

Green Grey Crustose on Oak bark

Observed: 12th August 2012 By: na3643
S159 Neighbourhood Nature - current student
na3643’s reputation in Fungi and Lichensna3643’s reputation in Fungi and Lichens

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

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

    Likely ID
    Confidence: It might be this.
Species interactions

No interactions present.


AlanS's picture

Lichen/alga mix?

I think a lot of this is just a layer of a green alga (Chlorophyta), but there may be a lichen mixed in (not Lecanora expallens but maybe a Lepraria). A microscope is often necessary to be sure in the absence of any lichen fruitbodies. However, as I have said in other observations by this poster, I click the picture to get an enlarged view, but when I click the resulting link for the original photograph it is much too small, and in this case lacks definition.

Algal mats are common on tree trunks and on stonework.

Sorry if "this poster" sounds impersonal, but all we have is this Open University "code"!