jakerman's picture

Crustose lichen?

Observed: 12th December 2012 By: jakermanjakerman’s reputation in Fungi and Lichensjakerman’s reputation in Fungi and Lichens
IMG_2656
IMG_2657
IMG_2659
Description:

Found on oak bark

Identifications

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
    Lepraria
    Confidence: I'm as sure as I can be.
Species interactions

No interactions present.

Comments

jakerman's picture

Chemical tests

Thanks very much Alan - genus is far better than I could have achieved, so your help is much appreciated. What type of chemical tests would I need to do?

Jane

AlanS's picture

Tests

With Lepraria, it is necessary to conduct thin layer chromatography (TLC*), which requires a silica gel plate, some nasty chemicals and supplies of known lichen acids for comparison. In theory it could all be done in a kitchen, and I have seen it set up and carried out in an old stable, but really it should be carried out in a laboratory with appropriate health and safety assessment and safeguards. Having the supplies of other known lichen acids is the big stumbling block, even in a laboratory setup.

Alan

P.S. * I suppose one could try playing the brilliant "Waterfall" by TLC (featuring the late, lamented, Lisa 'Left-eye' Lopez) to the Lepraria, but I fear it would not be the same.