oceanlis2000's picture

Unknown lichen

Observed: 25th April 2010 By: oceanlis2000oceanlis2000’s reputation in Fungi and Lichensoceanlis2000’s reputation in Fungi and Lichens
IMG_8738 (2).JPG
IMG_8738.JPG
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Description:
Identifications

No identification made yet.

Species interactions

No interactions present.

Comments

gardener's picture

It could be Rhizocarpon

It could be Rhizocarpon petraeum but thats not a definite ID.

Crustose lichens can be hard/impossible to identify in the field, let alone from photo's! They really need testing for the K and C reactions, and details of whether they were on an acidic or basic substrate are very important too.
Chemical reagents:
http://www.thebls.org.uk/content/chemical.html