Search found 64 matches

by Paul Cannon
Fri Aug 21, 2020 10:00 am
Forum: Lichens
Topic: BLS Virtual Identification Meeting
Replies: 16
Views: 1040

Re: BLS Virtual Identification Meeting

If there was sufficient interest, we could have a series of virtual meetings to introduce the new LGBI3 family accounts, to explain the changes and focus on ID issues for the species included?

Paul
by Paul Cannon
Thu Aug 20, 2020 4:26 pm
Forum: Rusts, Smuts, and Mildews
Topic: Marsh pennywort fungus
Replies: 1
Views: 362

Re: Marsh pennywort fungus

This could be caused by all sorts of agents, including insect damage.
You need to use a microscope...

Best wishes
Paul
by Paul Cannon
Fri Aug 14, 2020 3:22 pm
Forum: Lichens
Topic: Lichens of Great Britain and Ireland edn 3
Replies: 0
Views: 287

Lichens of Great Britain and Ireland edn 3

Hi everyone I'm pleased to announce that the first family treatment (the Arthoniaceae) for the forthcoming new edition of the Lichens of Great Britain and Ireland has been published. The family accounts form part of an ongoing online serial publication, Revisions of British and Irish Lichens . All o...
by Paul Cannon
Tue Jun 09, 2020 2:20 pm
Forum: Lichens
Topic: On Parmelia sulcata
Replies: 2
Views: 466

Re: On Parmelia sulcata

Hello Chris I've not seen the beast myself, but I think you have Lichenopuccinia poeltii . It seems to be fairly common in western Scotland on Parmelia saxatilis and P. sulcata , but hasn't yet been recorded from the Outer isles. The structures you depict are sporodochia, not pycnidia - solid masses...
by Paul Cannon
Sat Jun 06, 2020 11:55 am
Forum: Lichens
Topic: Placidiopsis custnani?
Replies: 1
Views: 905

Re: Placidiopsis custnani?

Hi both I have to admit that I had followed up on the "Placidiopsis cinereoides" story and sent a specimen to Othmar Breuss. His verdict was that it was a little atypical, but within the range of variation of Catapyrenium cinereum. He hadn't seen septate spores in this species before (though occasio...
by Paul Cannon
Tue Jun 02, 2020 3:42 pm
Forum: Ascomycetes
Topic: Hyalorbilia inflatula?
Replies: 4
Views: 2860

Re: Hyalorbilia inflatula?

The spore size is more or less consistent with measurements quoted on Zotto Baral's Google Drive website (see here if you're feeling brave)...
https://drive.google.com/drive/folders/ ... 0tNdG5NVUU

Best wishes
Paul
by Paul Cannon
Wed May 06, 2020 11:03 am
Forum: Fungi on miscellaneous substrates (not soil or wood)
Topic: Myzocytium netrii?
Replies: 2
Views: 2571

Re: Myzocytium netrii?

Hi Chris
I think you'll be on your own with this one! It doesn't look very much like the pictures in the original publication (as Lagenidium netrii) - see https://www.jstor.org/stable/24333375 but it could be a different stage in the life cycle, I suppose.
Best wishes
Paul
by Paul Cannon
Tue May 05, 2020 10:31 am
Forum: Rusts, Smuts, and Mildews
Topic: Puccinia brachypodii?
Replies: 2
Views: 603

Re: Puccinia brachypodii?

Hello Clare Welcome to the group - and a great first post! Rust fungi are broadly considered to be strongly host-specific, due to their biotrophic mode of nutrition that involves parasitism of living plant tissues (rather than necrotrophs that kill the tissue and eat it afterwards). There's actually...
by Paul Cannon
Wed Apr 29, 2020 3:51 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 878

Re: Graphis handelii in Britain

Thanks, but I think you meant G. elegans at the end of couplet 2a? Mark's been tweeting about inconsistencies in description of K+ norstictic reactions in LGBI2, I guess this was another example. Would be good to send material to Gothamie if you can, she'll be the expert guru for the Graphidaceae in...
by Paul Cannon
Wed Apr 29, 2020 1:43 pm
Forum: Lichens
Topic: Graphis handelii in Britain
Replies: 5
Views: 878

Re: Graphis handelii in Britain

Interesting... Just to check, G. elegans also has K+ yellow to red with crystals? In LGBI2 it says K+ red (crystals) but I assume this is incorrect or a shortened description of the reaction.

Paul
by Paul Cannon
Mon Apr 27, 2020 1:09 pm
Forum: Lichens
Topic: Biatoropsis on Usnea flammea - hafellneri?
Replies: 8
Views: 925

Re: Biatoropsis on Usnea flammea - hafellneri?

Yes, both articulata and ceratina are in the cornuta clade. It is worthy of remark, however, that cornuta in its traditional circumscription is very polyphyletic...
Will send you the paper.
Paul
by Paul Cannon
Mon Apr 27, 2020 9:20 am
Forum: Ascomycetes
Topic: Lachnum mollissimum
Replies: 4
Views: 1137

Re: Lachnum mollissimum

I've dug around the history of this a bit - the synonymy of Trichopeziza mollissima and T. leucophaea seems to originate in Dennis (1960) - the first edition of his ascomycete book. It does seem curious that two taxa with such different phenotype were combined by such an illustrious discomycetologis...