Search found 159 matches

by Neil Sanderson
Mon Feb 24, 2020 12:04 pm
Forum: Lichens
Topic: Coul Links Planning Decision
Replies: 1
Views: 319

Coul Links Planning Decision

In case anyone has missed it, the Scottish ministers have decided against the application for a golf course on Coul Links https://www.gov.scot/publications/planning-decision-na-hld-086/ Among the reasons given for their refusal was: The likely overall effect on lichens would be significantly adverse...
by Neil Sanderson
Mon Feb 24, 2020 10:17 am
Forum: Lichens
Topic: Pseudocyphellaria norvegica chemistry
Replies: 4
Views: 708

Re: Pseudocyphellaria norvegica chemistry

Caz I had hoped that someone with more experience of these species would answer, but I remember finding the reactions to be a bit difficult between the species pair Pseudocyphellaria intricata and Pseudocyphellaria norvegica , but that was some time ago, and I can not quite remember what I was findi...
by Neil Sanderson
Mon Feb 24, 2020 9:35 am
Forum: Lichens
Topic: Taeniolella arthoniae in the New Forest, New to Britain
Replies: 4
Views: 757

Re: Taeniolella arthoniae in the New Forest, New to Britain

Chris

Thanks, the doi.org link worked on my computer but does seem to have failed in the post, have replace with the direct link in post and it works now

Neil
by Neil Sanderson
Sun Feb 23, 2020 10:46 pm
Forum: Lichens
Topic: Taeniolella arthoniae in the New Forest, New to Britain
Replies: 4
Views: 757

Taeniolella arthoniae in the New Forest, New to Britain

The lichenicolous Hyphomycetes, are asexual fungi that lack defined structures to produce conidia (pycnidia) so produce conidia from bare hyphae across the host thallus. They include some wonderful looking fungi (look at the conidia of Milospium graphideorum under high power). As well as common gene...
by Neil Sanderson
Tue Feb 11, 2020 10:08 am
Forum: Lichens
Topic: A problematic Parmelia
Replies: 13
Views: 1429

Re: A problematic Parmelia

All I would hate to place a burden on those who generously give their advice, but perhaps more of the inexperience forum members should post their identification dilemmas so that we may all continue to learn Yes please, if I have time and some idea if will answer if not, someone else will, I hope. I...
by Neil Sanderson
Mon Feb 10, 2020 5:20 pm
Forum: Lichens
Topic: A problematic Parmelia
Replies: 13
Views: 1429

Re: A problematic Parmelia

Other Mark

Yes it is physical more like Xanthoparmelia conspersa, the silver-grey colour put me off, rather than the usual yellow-green colour, possibly an usnic acid deficient morph, if the photo is giving the right colour?

Neil
by Neil Sanderson
Mon Feb 10, 2020 2:20 pm
Forum: Lichens
Topic: A problematic Parmelia
Replies: 13
Views: 1429

Re: A problematic Parmelia

Mark So there's no chance I could have a Dermatocarpon growing on/in middle of a Parmelia that is underneath - is that correct ? No Dermatocarpon has rounded little divided lobes http://fungi.myspecies.info/taxonomy/term/4783/media , there is nothing like that in the pictures and Dermatocarpon speci...
by Neil Sanderson
Mon Feb 10, 2020 12:48 pm
Forum: Lichens
Topic: A problematic Parmelia
Replies: 13
Views: 1429

Re: A problematic Parmelia

Mark That does not look like a not a Dematocarpon to me, looks more like a poorly developed Parmelina pastillifera , the "black ostioles" are pycnidia, which are quite frequent on Parmelina pastillifera (see pictures http://fungi.myspecies.info/taxonomy/term/8103/media ), the globose isidia are just...
by Neil Sanderson
Fri Jan 24, 2020 9:11 pm
Forum: Lichens
Topic: Very odd Xanthoria
Replies: 5
Views: 1617

Re: Very odd Xanthoria

Xanthoria calcicola is not a strongly held option, but it would, I suppose be stunted growing on a Birch! Seems like the classic young Cladonia problem; too small/under developed to be identifiable. Otherwise out of ideas.

Neil
by Neil Sanderson
Fri Jan 24, 2020 11:53 am
Forum: Lichens
Topic: Very odd Xanthoria
Replies: 5
Views: 1617

Re: Very odd Xanthoria

What about Xanthoria calcicola? Looks like the coarse globose isidia of this species on the thallus surface. LGBI 2 says: Lowlands, especially on calcareous, nutrient-rich stonework, brickwork, tiles, monuments, rare on bark and wood I have never seen it on bark, but it seems it can grow in this hab...
by Neil Sanderson
Fri Jan 03, 2020 11:06 pm
Forum: Lichens
Topic: Ramalina europaea in Britain
Replies: 6
Views: 2350

Re: Ramalina europaea in Britain

OK not my last post; I could not resist trying to photograph the florescence. 2019-12-29-09.jpg Evernia prunastri with part of the medulla exposed under UV light, showing the florescence from evernic acid from the medulla 2019-12-29-10.jpg Ramalina europaea showing the florescence from evernic acid ...
by Neil Sanderson
Thu Jan 02, 2020 11:25 pm
Forum: Lichens
Topic: Ramalina europaea in Britain
Replies: 6
Views: 2350

Re: Ramalina europaea in Britain

Probably my last comment on the Ramalina pollinaria group. One thing I noticed was that the LBGI 2 described the aggregate as Medulla and soralia C–, K–, KC–, Pd–, UV± blue-white (usnic acid; evernic acid complex sometimes present) While Gasparyan et al (2017) https://www.cambridge.org/core/terms.%2...