MickETalbot's picture

Lichen (Cladonia fimbriata)

Observed: 13th December 2011 By: MickETalbotMickETalbot’s reputation in Fungi and LichensMickETalbot’s reputation in Fungi and LichensMickETalbot’s reputation in Fungi and Lichens
Lichen indet 21

Another of the many look alike forms.
NB Please take heed of all the comments made in resolving the ID. My thanks to all.


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.

Species with which Cladonia fimbriata interacts


MickETalbot's picture


Is there one on iSpot relating to Lichens..?

A link to the British Lichen Society's Glossary of Terms

synan's picture

In poor health?

Some podetia resemble C. fimbriata but the corticate stems don't match that species, which should be entirely farinose-sorediate. It could be in a stressed or diseased state; the basal squamules appear to have been subsumed by Lepraria or similar.


Brian Cambridgeshire's picture

Agree with C. fimbriata, and definitely unwell

I agree with Nigel that the cups are right for C. fimbriata. Looking closely, I don't think the stems are corticate, but have been stripped of the powdery soredia, perhaps by mites or other invertebrates. And whatever is growing over the squamules is being attacked, probably by a fungus. All in all, a very sick lichen!

AlanS's picture


I don't share the feeling that anything is unwell here, though I doubt that the Leparia is doing the Cladonia much good.

Some of the Lepraria is white at the edges, but if this is Lepraria lobificans, as it may well be (but without thin-layer chromatography, difficult ever to be sure), this may be die-back of some of the soredia exposing the underlying medulla, which this species has. I often see this in L. lobificans colonies, and indeed I think of parasitic fungi, but close examination tends not to confirm this.

Athelia arachnoidea is capable of turning Lepraria white (and indeed other lichens and mats of free-living algae too), but invasion by this highly destructive fungus is usually more obvious.


MickETalbot's picture


To you all for the very informative, in depth discussion.