George R. L. Greiff

Mycena chloroxantha

Mycena chloroxantha photographed recently in Oxapampa, Peru. The round cells are cherocytes which make up the universal veil - whitish, spiny acanthocytes are also visible. Described in 1983 from Brazil by Rolf Singer.

Mushroom Observer # 628987 / iNat 341877230

#fungifriends #mycology #mycena

Now found in 5 Irish counties as of yesterday from Cos. Louth/Armagh and this marks the first for the east coast!

Phenologically has been recorded In July, September, October and March

#fungifriends #ireland #bryology #liverwort

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The #nonseedUK26 meeting will be held at the Royal Botanic Garden Edinburgh on 15th December 2026. Please save the date. Further details will follow 😃

I found the RNeasy plant kit worked well for me. But if you are against kits, apparently trizol-based methods work.

An excellent example of the necrosis it can cause on epiphytic bryophytes. Thanks for the tag.

Hi Rob. Yes, this is likely the "Ilyonectria sp." from my website under Sordariomycetes. Would be a nice one to culture and / or sequence.

They could be uploaded to websites like FRDBI to aid identification. Such high-res images are pretty rare.

Lichen squamules on sandy soil.

Stacking with raw and 4-pixel shift. The images blow my mind - the process, shooting, stacking and developing from raw, is slow - - Probably not what I will be doing regularly.

Lichen people: Do you have ideas how to use such images to add value?

drive.google.com/file/d/1a2gS...

Also it was good to see that the legally protected Paralecanographa grumulosa is still present on the north and east side of Winterton church. A parasite of Dirina massiliensis.

This is an amazing record if this rare fungi that is closely linked to temperate rainforest. Not before observed in the SE of Ireland!! Wow

New site record of Hymenophyllum tunbrigense for Co. Louth (H31) growing in a rocky woodland on a minor hill. Happy to find this one today. A very scarce species in the county.

@bsbiireland.bsky.social
@bsbibotany.bsky.social

#ferns #botany #filmyferns

Nice. Interesting. I'm afraid I am not familiar with this species. I see Vezdaea in that sort of niche but this seems different. One for the books.

Tricky one but great documentation! Are the apothecia quite rigid or gelatinous? Could you provide a photo of the IKI reaction - is it whole asci or only the apices?

Thanks Jill!

Congrats, you're churning out some great VCRs!

I'm not sure about this one, I'm afraid. It superficially looks like Catinaria but can't be that.

You're welcome. It's on the first pic of post 2/2, I think. Would need micro in case it is primordia of the Pleostigma, but they frequently grow together on this host.

Hi Jenny. I think this is Pleostigma jungermanniicola on Scapania gracilis. Also present is a smaller black fungus, Epibryon casaresii.

POV: you are a young woman celebrating a recent academic success

First record of large leafy liverwort Bazzania trilobata for co Derry (H40) since 1834! Also growing alongside it was Hymenophyllum tunbrigense which is a new county site too.

Ness Country Park, Co. Derry.

@bsbiireland.bsky.social @bbsbryology.bsky.social

#bryophytes #ferns #botany

This is awesome! Good luck.

I can't stand seeing those Cladonia mummies. Another frustrating one is the harvesting of large patches of Leucobryum for terraria etc. Really damaging to populations.

Sounds like an exciting find!

They do look like hamster ears.

Nice. This one was full of them. I couldn't find any normal tubers...

@bbsbryology.bsky.social do you also see these sometimes on tuber-bearing Bryaceae?

Micrograph of liverwort cells, some of which are infected with brown fungal hyphae while others are healthy and contain plastids and oil bodies.

A final micrograph for today showing mycelium of an Epibryon sp. fungus inside liverwort cells. Most cells are infected but some in the lower part of the photo are healthy, as evidenced by the absence of hyphae and the presence of oil bodies.

Definitely. They are very difficult to study using classical morphological methods, and getting DNA sequences and/or cultures would probably also be quite tricky.

A rhizoidal gall on Bryum sp. from mud in a reservoir draw-down zone. It is club-shaped and curved, containing five chytrid zoosporangia inside it, which are spherical. Some of the zoosporangia have thread-like exit tubes leading to the outside, which liberate zoospores that infect other cells.

Micrograph of a rhizoid gall caused by a chytrid on Bryum moss. The infected cell contains several zoosporangia, some of which have thread-like exit tubes that release flagellated spores. Chytrids are interesting fungi that mostly lack hyphae and have mobile spores.

B. scapaniae is closely related to B. gymnomitrii on Gymnomitrium species. Both fungi grow on the lower parts of host shoots. The larger ascomata of the latter make it slightly easier to spot. Both fungi are very rarely recorded.