Grey lichen with black spots on window ledge
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Unfortunately there are many crustose lichens that can look like this and lens, chemicals and microscope can be needed to identify them with certainty.
Thanks for your comments Jenny, this is all new to me. Will try to key them.
http://www.britishlichens.co.uk/pictureindexcomplete.html is great for photographs but as many lichens occur in specific habitats it is a good idea to then try and check details of possible visual identifications.
The LichenIreland website has details and photographs for many species (and more being added) so you can check descriptions and habitat details.
Their distribution maps are for Ireland but you can check UK distribution by using the NBN Gateway
You could try looking at http://dbiodbs.units.it/carso/chiavi_pub21?sc=351 (Key to Nature), although it only has 29 crustose lichens. As Jenny says though, crustose lichens are notoriously hard to ID, especially through photos. If you are interested in learning more about lichens you could get in touch with the British Lichen Society and see if there is someone locally that would be willing to help you?
You're in "my" OPAL region, so if you want me to try and organise a lichen ID course locally, let me know....
My contact details can be found at www.sei.se/opal
OPAL Community Scientist
Yorkshire and Humber
Hi Sarah, at the moment things are a little hectic but thank you for your help and I'll remember your offer; I might have more time to do something in my area after the end of January. We seem to have a good range of lichen here. The links you've given are really helpful.
Lat/Lng: 54.164117407708, -1.4254224300385
OS grid ref: SE376744