Search found 366 matches

by Chris Johnson
Sun Mar 17, 2019 9:21 am
Forum: Lichens
Topic: Another new lichenicolous species for the UK (and the Northern Hemisphere)
Replies: 3
Views: 64

Re: Another new lichenicolous species for the UK (and the Northern Hemisphere)

Congratulations, another one to look out for.

Just off to the mainland for a week and look forward to some calmer weather when we return.

Best wishes, Chris
by Chris Johnson
Sat Mar 09, 2019 7:39 am
Forum: Ascomycetes
Topic: Ascospores fossilised in Sumatran amber
Replies: 3
Views: 118

Re: Ascospores fossilised in Sumatran amber

A tall ask I suspect.

Some Buellia spores have a broad median septum.

Regards, Chris
by Chris Johnson
Sat Mar 02, 2019 8:46 am
Forum: Ascomycetes
Topic: On Living Ivy
Replies: 6
Views: 421

Re: On Living Ivy

Hello Paul - bit late with this as I've been on Skye for a few days. I looked closely at the time and didn't see anything that would suggest Vialaea insculpta , but note the similarity. Also, the ascomata were more superficial than images I've seen of Vialaea insculpta , especially Jenny's. One to l...
by Chris Johnson
Mon Feb 25, 2019 11:53 am
Forum: Lichens
Topic: Lecidella elaeochroma anamorph?
Replies: 2
Views: 85

Re: Lecidella elaeochroma anamorph?

Thanks for the comfirmation, Mark. I though it must be.

Chris
by Chris Johnson
Mon Feb 25, 2019 10:23 am
Forum: Lichens
Topic: Lecidella elaeochroma anamorph?
Replies: 2
Views: 85

Lecidella elaeochroma anamorph?

Found with Lecidella elaeochroma on small birch twig. The pycnidia are completely immersed in the thallus with just the ostioles showing. Conidia mainly sickle-shaped with some U-shaped. Size is largely governed by the amount of curvature: 12.5–17.0 x approx. 1.0 µm. Is this the anamorph? Thanks aga...
by Chris Johnson
Sun Feb 24, 2019 11:29 am
Forum: Lichens
Topic: Porpidia?
Replies: 4
Views: 115

Re: Porpidia?

Neil

Great tip, that worked perfectly (even without the super-powerful Convoy UV light ;) ).

Porpidia cinereoatra it is.

Thanks, Chris
by Chris Johnson
Sat Feb 23, 2019 6:22 pm
Forum: Lichens
Topic: Porpidia?
Replies: 4
Views: 115

Re: Porpidia?

... Porpidia is a really difficult genus, sometimes it's better to pretend you haven't seen them... Paul Ha, I can certainly empathise with that view having spent several hours on it. The apothecia are slightly pruinose. I'll run with that with a big question mark and keep it for reference. Thank y...
by Chris Johnson
Sat Feb 23, 2019 6:16 pm
Forum: Lichens
Topic: Lichenicolous fungus on Ochrolechia parella
Replies: 2
Views: 106

Re: Lichenicolous fungus on Ochrolechia parella

Many thanks Paul, that's brilliant.

It's nice getting a few references together so that I'm not floundering all the time!

Regards, Chris
by Chris Johnson
Sat Feb 23, 2019 4:34 pm
Forum: Lichens
Topic: Porpidia?
Replies: 4
Views: 115

Porpidia?

Growing on Lewisian gneiss near the coast. Individual apothecia up to 1.3mm in diameter but many have coalesced. Paraphyses anastomosing. Spores simple: 12.8-19.4 x 7.6-9.8 µm Second image in water. Third image in KOH. Last image in Melzer’s. The nearest I can come up with is Porpidia contraponenda ...
by Chris Johnson
Sat Feb 23, 2019 3:57 pm
Forum: Fungi ID requests (post here if you aren't sure what type of fungus you've found)
Topic: Galerina??? growing in compost
Replies: 5
Views: 152

Re: Galerina??? growing in compost

Hi Bob

I would be looking at Conocybe, perhaps something close to Conocybe rugosa.

Cheers, Chris
by Chris Johnson
Tue Feb 19, 2019 2:31 pm
Forum: Lichens
Topic: Lichenicolous fungus on Ochrolechia parella
Replies: 2
Views: 106

Lichenicolous fungus on Ochrolechia parella

This has the look of a Monodictys species with a substantial branching structure. Terminal cells are mainly 1-septate. Cell widths: 5.9-8.2 µm

Basal colour is orangey becoming olive-green/brown towards the apices.

Any thoughts welcome.

Chris
by Chris Johnson
Mon Feb 18, 2019 9:00 am
Forum: Lichens
Topic: Lichenicolous fungus on Xanthoparmelia mougeotii
Replies: 4
Views: 136

Re: Lichenicolous fungus on Xanthoparmelia mougeotii

Heather, welcome to the forum.

Do you have any macro images?

You might want to consider Pyrenidium actinellum.

Regards, Chris