stevenelawson's picture

Lichen with spiky underside

Observed: 20th November 2012 By: stevenelawsonstevenelawson’s reputation in Fungi and Lichensstevenelawson’s reputation in Fungi and Lichensstevenelawson’s reputation in Fungi and Lichens
2012-11-20 13.57.08
DSC_0010 (2)

I don't know the first thing about lichen - and I'm not even sure this is lichen!
It has white spines underneath the waxy green, wavy upper, although the spines are soft and flexible.
Found in ankle-deep grass on very boggy ground (where isn't boggy in the west of Scotland right now?) in mixed woodland - birch, beech, some sycamore.
First picture, taken in field, shows small brown nodules on the uppers.
Be fascinated to know what it is.


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.


D.M.H.'s picture

Oops wrong dogs tooth lol

Oops wrong dogs tooth lol

All given ID's are subject to error/ommissions. Please seek independent verification before acting on ANY advice given. BE SAFE =)

stevenelawson's picture

@ pf339

Thank you very much for your ID - and for introducing me to the wonderful world of lichens. I've been busy Googling some of the terms you used to expand my non-existent knowledge of lichens. I'm only just starting to come to terms with fungi - now I've got a whole other world to learn about!
What makes this discovery/ID so pleasing is that I was absolutely, miserably soaking wet, traipsing through woodland and feeling very sorry for myself when I almost stood on this lichen.
I'd never seen anything like it before - and now I know what it is and have learned something interesting, so my day wasn't a total washout :-)
Kind regards,

synan's picture

The Peltigera puzzle

The dagger-like rhizines don't look right for P. hymenina, but are exactly right for P. membranacea. P. praetextata has similar-looking rhizines, but the presence of isidia/schizidia is usually diagnostic for that species.

This is wet, so any grey-white tomentum (characteristic of P. membranacea and P. praetextata, but not P. hymenina) on the upper surface is disguised, but I am sure it would reveal itself if allowed to dry.