Search found 159 matches

by Neil Sanderson
Sat May 16, 2020 1:34 pm
Forum: Lichens
Topic: What is Sphinctrina tubiformis Parasitising, one of my Lockdown Projects
Replies: 0
Views: 637

What is Sphinctrina tubiformis Parasitising, one of my Lockdown Projects

One product of the lockdown and me walking daily the local woods and dealing with backlogs of records is one getting the measure of finding the rare crust Pertusaria pustulata and also working out that the host of the very rare Sphinctrina tubiformis is not the common Pertusaria leioplaca as was tho...
by Neil Sanderson
Thu May 07, 2020 4:41 pm
Forum: Lichens
Topic: Chaenotheca trichialis?
Replies: 7
Views: 868

Re: Chaenotheca trichialis?

Chris

Got the specimen now, there is a lot of free living algae on the specimen, which is what I was seeing in the photograph, but peeking out from under this are some very typical blue-grey corticate granules, so I am now 100% happy this is Chaenotheca trichialis.

Neil
by Neil Sanderson
Thu May 07, 2020 4:37 pm
Forum: Lichens
Topic: Pseudocyphellaria norvegica chemistry
Replies: 4
Views: 706

Re: Pseudocyphellaria norvegica chemistry

Hi got the specimen and now had time to look, still looks most like Pseudocyphellaria norvegica , but the spot tests are indeed odd. I get K + brownish, C -, KC + very fleeting yellow and UV + bright blue white from the medulla. Short of TLC not sure I can go further, best ID I can give is Pseudocyp...
by Neil Sanderson
Wed Apr 29, 2020 10:27 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 596

Re: Graphis handelii in Britain

For comparison Graphis elegans and Graphis handelii spores:

2020-04-25-06.JPG
Graphis handelii spores, c25µm long, note thin spore wall

2020-04-27-01.JPG
Graphis elegans spore, 60 x 13 µm, showing distinctive thick wall

Neil
by Neil Sanderson
Wed Apr 29, 2020 5:35 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 596

Re: Graphis handelii in Britain

Paul yes, corrected (was doing on my phone). Yes will contact Gothamie to send her the specimen

Neil
by Neil Sanderson
Wed Apr 29, 2020 3:38 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 596

Re: Graphis handelii in Britain

Paul Yes it has norstictic acid too. Vince asked for a quick key: 1a Thallus K + yellow to red, producing crystals (norstictic acid) ... 2 1b Thallus K - or K + yellow ... 3 2a Lirellae striate, hymenium not inspersed with oil droplets, spores to 60 µm long ... Graphis elegans 2b Lirellae not striat...
by Neil Sanderson
Tue Apr 28, 2020 11:10 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 596

Graphis handelii in Britain

I have collected another odd thing from my local New Forest woods, a Graphis with a K + yellow to red spot test, with crystals, so containing norstictic acid, but looking very unlike Graphis elegans . I found this on a species rich Holly in Beech – Holly pasture woodland. It lacked any striations on...
by Neil Sanderson
Tue Apr 28, 2020 10:22 pm
Forum: Lichens
Topic: Rinodina capensis New to Britain
Replies: 1
Views: 443

Re: Rinodina capensis New to Britain

OK I got this one wrong, I failed to understand the difference between Physcia-type spores and Pachysporaria-type properly, so this was just Rinodina roboris var. roboris growing in somewhat stressed conditions. The key difference in the two spore types is that the Physcia-type spores have quite ang...
by Neil Sanderson
Tue Apr 28, 2020 10:12 pm
Forum: Lichens
Topic: Puzzling over Pertusaria
Replies: 2
Views: 644

Re: Puzzling over Pertusaria

Nigle Do not known Pertusaria leucosora and the deception in the LGBI2 leaves me scratching my after head reading! . The K± dirty brownish spot test is interesting, I have seen this spot test reaction by fumarprotocetraric to K in Cladonia species, but it is not mention much in the LGBI. It is not c...
by Neil Sanderson
Mon Apr 27, 2020 9:46 pm
Forum: Lichens
Topic: Biatoropsis on Usnea flammea - hafellneri?
Replies: 8
Views: 619

Re: Biatoropsis on Usnea flammea - hafellneri?

Maxine Well done for get that image of the basidia from a gall on Usnea esperantiana , clearly not Biatoropsis hafellneri , but looking at Millanes et al (2016) Three new species in the Biatoropsis usnearum complex, Herzogia 29 (2): 337–354, I am not sure this is Biatoropsis usnearum either, perhaps...
by Neil Sanderson
Mon Apr 27, 2020 1:30 pm
Forum: Lichens
Topic: Biatoropsis on Usnea flammea - hafellneri?
Replies: 8
Views: 619

Re: Biatoropsis on Usnea flammea - hafellneri?

Paul
cornuta in its traditional circumscription is very polyphyletic
Well what a surprise, NOT!
Will send you the paper.
Thanks

Neil
by Neil Sanderson
Mon Apr 27, 2020 12:37 pm
Forum: Lichens
Topic: Biatoropsis on Usnea flammea - hafellneri?
Replies: 8
Views: 619

Re: Biatoropsis on Usnea flammea - hafellneri?

Paul I've tried digging around in tremelloid fruit-bodies and find it very difficult to find any recognisable structures. So it is not just my microscope technique! I have also had Biatoropsis on Usnea articulata and Usnea ceratina in woods with frequent Biatoropsis hafellneri on Usnea cornuta . I s...