Search found 154 matches

by Neil Sanderson
Mon Jun 01, 2020 9:41 am
Forum: Lichens
Topic: Lecanora hybocarpa an overlooked lichen
Replies: 11
Views: 2765

Re: Lecanora hybocarpa an overlooked lichen

Dave After I posted last noticed that the LGBI 2 had the solubility correct for Lecanora pulicaris i.e. dissolves in K but not N; Lecanora hybocarpa is the same as this. The LGBI 3 editorial committee (which I am on) really needs to start out this sort of error; not good at all! If any one has any p...
by Neil Sanderson
Sun May 31, 2020 9:52 pm
Forum: Lichens
Topic: Rummaging in my Herbarium
Replies: 0
Views: 17

Rummaging in my Herbarium

As part of my lock down activities I have been rehousing my herbarium into more organised cabinets, a process which turned up specimens that just needed looking at, some with interesting results. A fertile Chrysothrix flavovirens specimen from lignum on standing dead Yew in Birch - Sallow -Oak - Hol...
by Neil Sanderson
Fri May 29, 2020 10:05 pm
Forum: Lichens
Topic: Lecanora hybocarpa an overlooked lichen
Replies: 11
Views: 2765

Re: Lecanora hybocarpa an overlooked lichen

Dave I am finding far more Lecanora argentata about than I realised was about until looked systematically. Mainly in woods down here. Yes those are fine for Lecanora hybocarpa , including the yellow colour of the crystals in polarising light, which might be diagnostic. If you find Lecanora pulicaris...
by Neil Sanderson
Thu May 28, 2020 1:04 pm
Forum: Lichens
Topic: Interesting Things from Coed y Rhygen
Replies: 6
Views: 785

Re: Interesting Things from Coed y Rhygen

Paul Cannon might be interested for the LGBI 3 amount, then, if confirmed it should go to a national collection.

Neil
by Neil Sanderson
Wed May 27, 2020 6:53 pm
Forum: Lichens
Topic: Interesting Things from Coed y Rhygen
Replies: 6
Views: 785

Re: Interesting Things from Coed y Rhygen

Dave I have now had a look on the computer and yes I think this very well maybe fertile Mycoblastus caesius ; well done! If correct just in time for LGBI 3. Mycoblastus sanguinarius can be sorediata ( Mycoblastus sanguinarius f. leprosus ) and this form has one of its few Welsh sites at the head of ...
by Neil Sanderson
Wed May 27, 2020 5:50 pm
Forum: Lichens
Topic: Interesting Things from Coed y Rhygen
Replies: 6
Views: 785

Re: Interesting Things from Coed y Rhygen

Dave Looking on my phone, but I have an idea, looking at the thallus, how bright is the medulla UV fluorescence? because the thallus looks like some forms of Mycoblastus caesius to me. This means you might have fertile Mycoblastus caesius , which would be a first. It would also mean that this previo...
by Neil Sanderson
Tue May 19, 2020 8:48 pm
Forum: Lichens
Topic: Heads Up Porina rosei in Britain is Two Taxa
Replies: 0
Views: 105

Heads Up Porina rosei in Britain is Two Taxa

One result that has come out of Jan Vondrak's intensive recording of 1ha plots in Scotland and England in 2018, is that what we are recording as Porina rosei is actually two unrelated taxa. Jiří Malíček made the discovery, has sequenced it and is working on this. The full results will be revealed la...
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: 80

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: 469

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: 460

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: 275

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: 275

Re: Graphis handelii in Britain

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

Neil