Ginny B's picture

Aspicilia leprosescens?

Observed: 9th September 2012 By: Ginny B
S159 Neighbourhood Nature - course complete
Ginny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and Lichens

Growing on siliceous rock in the splash zone, just above Lichina confinis and in between Caloplaca marina, a pale, greenish-grey crustose lichen that tested C-K-. The larger black-centred ‘jam tart’ apothecia are approximately 0.5mm in diameter.
This morning the light was just right and I have at last managed to get a more detailed photo even though the colour isn’t quite true. I think this may be an Aspicilia, possibly A. leprosescens?


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

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

Species interactions

No interactions present.


gardener's picture


If you compare your photograph with the one of Aspicilia leprosescens linked below you'll see the difference in the apothecia:

With C-, K- results Lecanora helicopis is a possibility (though thats not a definite ID!)

Ginny B's picture

Thank you for your help, Jenny

Thank you, Jenny, for your help. Even though it appeared similar to the illustration in the key I was using (A Field Key to Coastal and Seashore Lichens by Frank S Dobson) my photo certainly doesn't look much like Aspicilia leprosescens in the link you showed me, nor indeed in that of I find it difficult to visualise what this lichen might look like life size and not enlarged as in the photos.

I had a look at for L. helicopis but think this is too dark to be it.

Given that in the above key the enlargement is at the same scale as that of Caloplaca marina, making it easier for me to compare, it does make the apothecia of A. leprosescens look too small. In the same key, thankfully also illustrated at the same scale, is Lecanora actophila. I found further illustrations of this one here: and I think this looks much more like mine. I have had a look at the NBN map in an effort to find out if this has been found in my area before and indeed L. actophila has been found both a little further east and a little further west, so it seems it is possible.


Ginny B's picture

Such a relief

Such a relief to have finally got there. Thanks again for the help.