Cetraria sp.?

[Tiggrx]

Is this a species of Cetraria?

It was growing on top of a stone wall (an old sheep pen) in Kielder Forest, Northumberland with abundant (and very diverse) Cladonia spp.

Sorry for the poor photos - for some reason it didn't want to be focused on.

thanks
Aaron

[JennyS]

Hi Aaron,

This is a very tentative reply as I've only come across Cetraria aculeata once but it was really glossy, almost 'polished' looking:
Cetraria aculeata

Your photo's look rather more like the rather 'spiky' Cladonia crispata I found (LH photo) in the link below:
Cladonia crispata

[AlanS]

I agree with Jenny.

Alan

[Tiggrx]

Thank you both again.

I never considered this as a Cladonia. In fact in my original notes (before I looked in a book) I wrote down Bryoria sp.