Neil Sanderson
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Sylvia What I can see of the soralia look more like those of
Caloplaca alstrupii, with a rim of thallus “exploding” around the pustule. The very yellow soralia (P5120132.jpg) belong to something else I think; there is a sorediate Flavoplacaspecies in other pictures. Neil
Lucas An important record whatever it is!
Paul might be more informed on this, but looking at your data and pictures I would think it is more likely to be
Huneckia pollinii. Some of the Italic pictures do show brown caps to the paraphyses, I think, and the spore sizes are closer. The habitat is also a better match; Caloplaca caesiorufellahas only been found in very exposed maritime situations on lignum and moss Britain. Is the hymenium inspersed with oil droplets or not, apparently Huneckia polliniiis not and Caloplaca caesiorufellais? Neil
Lukas Not sure about this one.
Cetrelia chicitaewould be UV+ but noticeable weaker that Cetrelia cetrarioides, which with perlatolic acid is very very bright. Cetrelia chicitaealso should be C- and KC+ pink red as is typical of alectoronic acid. I have found Cetrelia chicitaeand the weaker UV+ was quite distinct and prompted the KC test. Your UV fluorescence looks very bright and easy to photograph, which suggest this has perlatolic acid, so should be Cetrelia cetrarioides, in which case it should be C–. As it is KC– this sort of rules out alectoronic acid and Cetrelia chicitae! Cetrelia olivetorums. str. is C+ pinkish but should be KC+ red and UV–. So maybe
Cetrelia cetrarioideswith an unexplained C+ reaction. Only TLC would take us much further. Neil
Sylvia Great find! Definately seems to be on the move after being only known from the lower Tamar Valley for several decades!
Neil
Lecidea erythrophaeahas dark reddish to black apothecia when I have found it, these are too pale and the thallus is not white enough. That looks a lot more like Xanthosyne varianssubsp. exigua(was Traponora varians), which I have started finding in the New Forest see https://britishlichensociety.org.uk/resources/species-accounts/traponora-varians ” class=”bbcode_url”> https://britishlichensociety.org.uk/resources/species-accounts/traponora-varians Lecidea erythrophaeahas no reactions and the latter reaction in particular would be a killer for Lecidea erythrophaea. I was planning a post about what I have been finding on twigs in the New Forest, as a lot has turned up since I started looking for
Lecanora pseudargentata(including the real J apewiella tavaresiana, so look out for that too) Neil
Rob I was hoping someone more knowledgeable on rock would reply, but looking at the pictures and reading descriptions it looks like poorly developed
Haugania oederito me, presumably there because the sandstone is iron rich. An interesting addition to the lowland heathland pebble assemblage. Neil
Kian Yes the first is fine, it was just a bit messy to confirm from a photo. From your list it was the
Pyrrhospora querneawas what was making a bit difficult to be sure what was going on! Neil
Kian Yes well done, the second and third links look great. The first appears to be mixed up with something granular, but the others are good.
Now the most northerly British record
Neil
Sylvia Yes definately
Hypotrachyna lividescens, a nice mature thallus, excellant find and suggests this species is on the move. I have now found it in three locations in the New Forest, so four in Hampshire. 
[attachment=0]2026-04-01-08.JPG[/attachment]
A mature thallus on a Hawthorn branch at Balmer Lawn, New Forest, HampshireNeil
The spores in the outerhebridesfungi website are in water; were yours in K? The latter is normal practice (I would suspect Printzen et al (2018) were in K) as this makes the structures of the spores much clearer. K could make them swell up a bit and would clear the guttules. Staining structures inside Ascus tips; over staining is usually my problem (too dark to make out the structures) and good views are often only seen in a few asci.
Neil
Ben The spore sizes puts it well into
Vahliella atlantica, which is what Andy thought it looked like. Also your cortex cross section looks more like Vahliella atlanticaas shown in Printzen et al (2018) than their picture of Fuscopannaria nebulosa. What an interesting record!
Neil
Ben Not sure if Andy has contacted you directly but, I have responses from Andy and Brian Coppins
Andy:
Quote:Not ignobilis. looks like
Vahliella atlanticato me …..copied to Brain too….. what size are the spores – to distinguish from
Moelleropsis nebulosa…..
Brian:Quote:Just pitching in. I think this a well-developed
Fuscopannaria( Moelleropsis) nebulosa. As Andy implied, spore measurements should decide the matter. It would be good to have better details for the Database record – also worth an NRI entry
Cheers!
Brian
For
Fuscopannaria nebulosathe LBGI gives ascospores (11–) 13–15 (–20) × 6–8 µm For
Vahliella atlanticathe LBGI gives ascospores 15–25 (–30) × 6–8 µm Neil
There looks to be a scale at the bottom of your spore pictures, which looks to be to me to put these towards
Vahliella atlanticasize. However, Fuscopannaria nebulosa, has at least been recorded from an old Ash before and is not as strictly coastal, so maybe more likely Neil
Peter Yes looks very likely to be a Tremella, like you I find these very difficult to work with under the microscope, so can not help much!
Neil
At first look I thought why is that not Protopannaria pezizoides, but reading I see your point, but I have only seen Fuscopannaria ignobilisdry, so not sure. Do you have a contact for Andy Acton; he will have seen Fuscopannaria ignobilisa lot more often than me. If not message me in this forum and I can give you his contact email. Neil
Mark Thanks, yes I have already qualified the surviving better on limestone on the BLS species account as surviving better on limestone walls in upland low ammonia deposition areas (recent information from the Knights, see the concentration of red dots in North England on the dot map). Your grave stones confirm what I thought that there is a general sensitivity that it is succumbing to, most likely to too much ammonia. It certainly needs some ammonia, or other pH raising input; Francis Rose though dust was sigificant in the south of Europe where it enters in Lobarion communities. It was always absent from the central New Forest area where ammonia levels were always low but was in the enclosed farmed areas beyond on Elm and Oak, now gone from there, first the Elms now from Oak and a grave stone. While absolute ammonia haters, requiring low bark pH are rapdily lost to increasing ammonia and rising bark pH, there are also species, such as it appears
Anaptychia ciliaris, that depended on mild enrichement that are also seem vulnerable. Pleurosticta acetabulumseems to be another one, which will now be added to the Red List for decline alone, provisionally as EN A2ce Neil
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