Search found 12 matches

by Paul Cannon
Thu Oct 18, 2018 5:53 pm
Forum: Lichens
Topic: What Lichen is this please
Replies: 2
Views: 168

Re: What Lichen is this please

There will probably be a mixture of species here, but I think that it is mostly Platismatia glauca - very common in your area.

Best wishes
Paul
by Paul Cannon
Sun Aug 05, 2018 4:15 pm
Forum: Ascomycetes
Topic: Id Request: Small white asco on leaf petioles of ash perhaps
Replies: 7
Views: 1112

Re: Id Request: Small white asco on leaf petioles of ash perhaps

If the asci have croziers at the base (and the petioles do come from ash which seems likely to me) you have the notorious Hymenoscyphus fraxineus , causal agent of ash dieback disease. If there are no croziers, it will be H. albidus , a native non-pathogen occupying the same niche and in serious nee...
by Paul Cannon
Mon Jun 11, 2018 11:03 am
Forum: Fungi on miscellaneous substrates (not soil or wood)
Topic: Anamorph on Sphagnum
Replies: 4
Views: 838

Re: Anamorph on Sphagnum

My guess is that these are conidiomata of a species of the lichen genus Micarea, but it's a troublesome group and I'd struggle to ID it even with the specimen in front of me. Sorry not to be of more help...
by Paul Cannon
Mon Jun 11, 2018 10:53 am
Forum: Lichens
Topic: Rusty red crustose lichen. - (ID request).
Replies: 3
Views: 1458

Re: Rusty red crustose lichen. - (ID request).

The green lichen is certainly Rhizocarpon geographicum . The orange stuff is the alga Trentepohlia , species of which can be free-living as well as farmed by fungi in lichen associations. Colonies can be frequently encountered in damp or shady conditions, on rocks or trees - you often see it on will...
by Paul Cannon
Mon Oct 31, 2016 1:24 pm
Forum: Ascomycetes
Topic: Greyish disco on deciduous stump
Replies: 10
Views: 3823

Re: Greyish disco on deciduous stump

Assuming that you had asci rather than basidia, most would identify this as Mollisia cinerea , though in reality that is a horrible hotchpotch of species that needs a proper sorting out. And I can assure you that acquiring a dissecting microscope will make your life immeasurably easier and more plea...
by Paul Cannon
Mon Aug 22, 2016 9:57 am
Forum: Rusts, Smuts, and Mildews
Topic: Coleosporium tussilaginis on Red Bartsia?
Replies: 2
Views: 1221

Re: Coleosporium tussilaginis on Red Bartsia?

You may be interested to learn that the Continentals (or some of them at least, in the form of Klenke & Scholler's book Plflanzenparasitische Kleinpilze 2015) separate Coleosporium tussilaginis into a series of host-related species - and the one on Scrophulariaceae s. lat. is considered to be Coleos...
by Paul Cannon
Sun Feb 07, 2016 4:23 pm
Forum: Ascomycetes
Topic: Peziza systematics
Replies: 1
Views: 1281

Re: Peziza systematics

I'd just add here that I have high regard for all of the authors of the phylogenetics paper you referred to, but it was published at the beginning of the molecular era and we have much more data now (and more sophisticated ways of analysing it). For some groups of fungi ITS sequences are very effect...
by Paul Cannon
Sun Feb 07, 2016 4:17 pm
Forum: Ascomycetes
Topic: Geoglossum?
Replies: 7
Views: 2394

Re: Geoglossum?

Hi Jenny Chris is quite right, though ID is not impossible with a key (Brian Spooner's one works OK in general for me) and a microscope preparation or two. It's important to ensure that you use mature (discharged) spores for measurement and counting septa. I was shown a neat trick to achieve this - ...
by Paul Cannon
Wed Nov 11, 2015 11:42 pm
Forum: Rusts, Smuts, and Mildews
Topic: Calcarisporium arbuscula?
Replies: 2
Views: 1264

Re: Calcarisporium arbuscula?

The conidiophores look very much like Lecanicillium fungicola (look at Zare & Gams, Mycol. Res. 112: 811-824, 2008 - I can send it to you if you can't download it). I don't suppose the spores are Lactarius basidiospores?
Kind regards
Paul
by Paul Cannon
Wed Nov 11, 2015 11:27 pm
Forum: Rusts, Smuts, and Mildews
Topic: Podosphaera clandestina
Replies: 8
Views: 1825

Re: Podosphaera clandestina

First of all, great pictures, both of you. I'd be inclined to focus back on Cicinobolus/Ampelomyces - I fancy that Chris J's pictures of conidia are associated with a broken-open ascoma of Podosphaera clandestina, rather than necessarily emanating from within it. Judging from Chris J's later images ...
by Paul Cannon
Wed Nov 11, 2015 10:55 pm
Forum: Rusts, Smuts, and Mildews
Topic: Gymnosporangium sabinae?
Replies: 4
Views: 1468

Re: Gymnosporangium sabinae?

What wonderful images! This looks spot on to me - rust identification is helped immensely by knowing the host. G. sabinae seems to have been particularly prevalent this year.

Best wishes
Paul
by Paul Cannon
Wed Oct 21, 2015 10:19 am
Forum: Ascomycetes
Topic: Astrosphaeriella stellata
Replies: 1
Views: 1269

Re: Astrosphaeriella stellata

I'm coming to this rather late, but Brian passed your specimen to Martyn Ainsworth who passed it on to me as I try to maintain an interest in all the British Ascomycota . I've created a page for the species on the Fungi of Great Britain & Ireland website - see http://fungi.myspecies.info/all-fungi/a...