Search found 60 matches

by Paul Cannon
Sat Jun 06, 2020 11:55 am
Forum: Lichens
Topic: Placidiopsis custnani?
Replies: 1
Views: 21

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: 93

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: 393

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: 209

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: 292

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: 292

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: 345

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: 623

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...
by Paul Cannon
Mon Apr 27, 2020 9:09 am
Forum: Lichens
Topic: Biatoropsis on Usnea flammea - hafellneri?
Replies: 8
Views: 345

Re: Biatoropsis on Usnea flammea - hafellneri?

U. flammea wasn't included in the most recent major phylogeny of Usnea for some reason (Truong et al., Mol. Phylog. Evol. 68: 357, 2013). However, combining the info in this with the phylogeny in Saag et al. (Lichenologist 43: 427, 2011), it seems reasonable to assume that U. flammea belongs to the ...
by Paul Cannon
Thu Apr 23, 2020 10:52 am
Forum: Ascomycetes
Topic: Lachnum mollissimum
Replies: 4
Views: 623

Re: Lachnum mollissimum

Not a group that I know all that well, but I think the latest placement is in Trichopeziza - see http://fungi.myspecies.info/all-fungi/trichopeziza-mollissima. There does seem to be variation in the amount of yellow pigment around the hairs, but I think the yellow morphs predominate. There is anothe...
by Paul Cannon
Mon Apr 13, 2020 10:31 am
Forum: Fungi on miscellaneous substrates (not soil or wood)
Topic: Penicillium vulpinum
Replies: 5
Views: 730

Re: Penicillium vulpinum

Hello all I've been reluctant to leap in here, but here goes... The good news is that you clearly have a species of Penicillium. That's most of the good news. The bad news is that there are lots (maybe hundreds) of species, which have been studied almost exclusively in pure culture. That makes thing...
by Paul Cannon
Sun Apr 12, 2020 2:13 pm
Forum: Lichens
Topic: Arthonia cinnabarina group Sorted Out
Replies: 2
Views: 288

Re: Arthonia cinnabarina group Sorted Out

Presumably C. cuspidans corresponds to what used to be called Arthonia elegans auct. brit. in LGBI2. I only have one decent candidate for C. fallax in my collections, from Nant Gwynant underneath the eastern flanks of Snowdon; the spore size is just about right. The older paper (I'll send that to Ne...