Search found 35 matches

by Paul Cannon
Tue Aug 06, 2019 3:40 pm
Forum: Lichens
Topic: Small but perfectly formed
Replies: 2
Views: 570

Small but perfectly formed

Hello all Looking through a collection of bits and pieces from Dartmoor, I came across a fertile thallus of Cladonia portentosa . Not something I've seen before, apothecia aren't mentioned at all in LGBI2 and are noted as infrequent in the Nordic flora. Have I just not been looking beyond the gross ...
by Paul Cannon
Mon Jun 03, 2019 9:10 am
Forum: Lichens
Topic: Cladonia coccifera?
Replies: 4
Views: 766

Re: Cladonia coccifera?

Hello Bob Nice pictures! Cladonia coccifera is a species aggregate and your lichen certainly belongs here, but is probably not C. coccifera sensu stricto which is a Scottish mountain species. Most people would record this as C. diversa which is the common and widespread species of the aggegate, alth...
by Paul Cannon
Tue Mar 26, 2019 11:53 am
Forum: Lichens
Topic: Is this Vahliella leucophaea?
Replies: 4
Views: 765

Re: Is this Vahliella leucophaea?

I think that V. leucophaea is a good guess based on the images. V. leucophaea has a dark chocolate thallus that you see here, V. atlantica has a more greyish thallus and occurs on soil rather than rock (though V. leucophaea can also occur on soil over rock). I'm slightly hesitant because the lichen ...
by Paul Cannon
Tue Mar 26, 2019 11:02 am
Forum: Lichens
Topic: A new lichen for GBI?
Replies: 14
Views: 1881

Re: A new lichen for GBI?

After a long delay (caused mainly by me forgetting to post off the specimen) I have had an identification from Othmar Breuss (the world expert in such species). His response is given below.... The " Placidiopsis cinereoides " specimen is Catapyrenium cinereum . I found only simple spores (but they m...
by Paul Cannon
Tue Mar 19, 2019 9:52 am
Forum: Ascomycetes
Topic: Perithecia in slits on Oak
Replies: 4
Views: 1209

Re: Perithecia in slits on Oak

I still think this is a likely - ID - it may be colonising an existing fissure in the bark rather than causing it.

Best wishes
Paul
by Paul Cannon
Sun Mar 17, 2019 5:57 pm
Forum: Ascomycetes
Topic: Perithecia in slits on Oak
Replies: 4
Views: 1209

Re: Perithecia in slits on Oak

I would look at Chaetosphaeria ovoidea (in Ellis & Ellis as Zignoëlla ovoidea), but more information on characters such as the ascus tip would be helpful. It's a common plurivorous species, so you wouldn't frighten the horses by giving it that name....

Best wishes
Paul
by Paul Cannon
Sat Mar 16, 2019 6:30 pm
Forum: Lichens
Topic: Another new lichenicolous species for the UK (and the Northern Hemisphere)
Replies: 3
Views: 749

Another new lichenicolous species for the UK (and the Northern Hemisphere)

Hello all At the recent BLS workshop at Cober Hill, Heather gave me a diseased specimen of Parmelia sulcata that she'd recently collected from Findhorn. After some digging around, I think that it is Endococcus parmeliarum , and I can't find any other records of the species except the type that was c...
by Paul Cannon
Tue Feb 26, 2019 12:33 pm
Forum: Ascomycetes
Topic: On Living Ivy
Replies: 6
Views: 1462

Re: On Living Ivy

Sorry, have come to this rather late. Nothing much further to add regarding the first two species, but I think the third could be Vialaea insculpta . This has isthmoid ascospores (looking like two bananas in a chain) and can break up at the constricted part. However, the spores do look slightly narr...
by Paul Cannon
Sat Feb 23, 2019 5:31 pm
Forum: Lichens
Topic: Porpidia?
Replies: 4
Views: 750

Re: Porpidia?

If I had to give a name (any name!) on pain of death I would have plumped for P. cinereoatra as the apothecia look slightly pruinose from the picture, but this and contraponenda can only be told apart reliably by TLC. Porpidia is a really difficult genus, sometimes it's better to pretend you haven't...
by Paul Cannon
Sat Feb 23, 2019 5:21 pm
Forum: Lichens
Topic: Lichenicolous fungus on Ochrolechia parella
Replies: 2
Views: 543

Re: Lichenicolous fungus on Ochrolechia parella

Hello Chris
This is Lichenostigma alpinum (the Phaeosporobolus anamorph). It's been recorded once from the Outer Hebrides (by Brian Coppins from the Shiants) and around 20 times from Scotland - it's probably overlooked rather than rare, but a useful new record nonetheless.

Best wishes
Paul
by Paul Cannon
Sat Feb 23, 2019 5:00 pm
Forum: Lichens
Topic: Parmotrema on hazel
Replies: 3
Views: 692

Re: Parmotrema on hazel

Thank you, Neil. No KC+ reaction. I found another piece of Parmotrema this afternoon, no KC+ again so presumably perlatum. That also had the strong blue reaction with the Convoy UV light, but neither of the samples showed any blue reaction with my other UV light (the blue one recommended by Neil bef...
by Paul Cannon
Fri Feb 22, 2019 6:30 pm
Forum: Lichens
Topic: Parmotrema on hazel
Replies: 3
Views: 692

Parmotrema on hazel

Hello all I assumed the lichen with the attached images was just Parmotrema perlatum , but to my surprise the medulla is definitely UV+ ice blue (perhaps even bright blue, the image doesn't do it justice - and note also the brilliant yellow fluorescence of the K+yellow cortex). So that seems to make...