Search found 19 matches

by Paul Cannon
Mon Jan 21, 2019 12:44 pm
Forum: Lichens
Topic: A new lichen for GBI?
Replies: 12
Views: 193

Re: A new lichen for GBI?

Hello Maxine
I think this was the one we found in Galloway in April 2018!
by Paul Cannon
Sun Jan 20, 2019 2:07 pm
Forum: Lichens
Topic: White Crustose Lichen
Replies: 6
Views: 61

Re: White Crustose Lichen

Jenny's Herteliana suggestion is worth following up. The thallus is described as pale duck-egg blue but the colour isn't always well developed. Or it could be one of the Opegrapha species that are lichen parasites, which would account for the irregular apothecia. You are sure that the white is a lic...
by Paul Cannon
Sun Jan 20, 2019 2:01 pm
Forum: Lichens
Topic: Coastal Crustose
Replies: 2
Views: 27

Re: Coastal Crustose

Hello Chris, good to see you're getting your eye in! This is an Acarospora , I think, which has ascospores that fragment into hundreds of part-spores. The colour suggests A. smaragdula but it could also be the very common A. fuscata . The former is C- and usually K+ red, the latter is C+ red and K-....
by Paul Cannon
Sun Jan 20, 2019 1:19 pm
Forum: Lichens
Topic: A new lichen for GBI?
Replies: 12
Views: 193

Re: A new lichen for GBI?

Thank you to Mark for his opinion on the species (welcome to the forum!), and to everyone else who has commented. Othmar Breuss has offered to take a look at the specimen, and once I've got around to posting it and getting a response, I'll make another update. The Nimis & Martello book is available ...
by Paul Cannon
Thu Jan 10, 2019 12:07 pm
Forum: Lichens
Topic: A new lichen for GBI?
Replies: 12
Views: 193

Re: A new lichen for GBI?

Thank you for the info, Neil - I hadn't seen that paper. The picture looks not entirely different from my specimen, so cineroides still seems to be an option. Othmar Breuss has offered to look at it, so we may know more in time.

Best wishes
Paul
by Paul Cannon
Wed Jan 09, 2019 12:56 pm
Forum: Lichens
Topic: Phaeographis smithii?
Replies: 1
Views: 71

Phaeographis smithii?

Hello all I picked this up from an oak twig near Guildford yesterday afternoon. I had assumed that it was a parasitic fungus (probably Colpoma ) bursting through a young lichen thallus, but the fruit bodies do belong. It seems to be Phaeographis smithii which would be new to the VC (but then lots of...
by Paul Cannon
Mon Jan 07, 2019 6:10 pm
Forum: Lichens
Topic: A new lichen for GBI?
Replies: 12
Views: 193

A new lichen for GBI?

I am an eternal optimist when it comes to lichen identification, so this may turn out to be less exciting... I've been going through some samples from a soil pocket in siliceous maritime rocks near Stranraer (VC74) and have come up with what seems to be Placidiopsis cinereoides . This was described ...
by Paul Cannon
Thu Oct 18, 2018 5:53 pm
Forum: Lichens
Topic: What Lichen is this please
Replies: 2
Views: 362

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: 1540

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: 1207

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: 1705

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: 4268

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...