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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

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Hymenoscyphus on wet wood
François Valade, 14-09-2016 20:29
François Valadehello
last saturday I found on wet wood (maybe Carpinus) laying in a wet pond, a greyish ascomycete. I am unable to choose any genus for this collection
apothecia, 1-2 mm, greyish, reddening when aged, turbinate, sessile
asci 110-125x13µm, IKI negative, with crozier
paraphysis with refractive content, 2 µm wide
spores with many guttules, (16)-20-22x4,5-5 µm
excipulum medular textura intricata, external cells, colored under the lens, piriform, globose.
any suggestion is welcome
thank you
best wishes
François
  • message #44924
  • message #44924
Hans-Otto Baral, 14-09-2016 20:36
Hans-Otto Baral
Re : Helotiale on wet wood
Hi Francois
this seems to be my Hymenoscyphus  (Phaeohelotium) griseobrunneus. But this species must be without croziers. I am not sure that yours has. Do you have a clearer pic? This one might be H-.
Zotto
François Valade, 14-09-2016 20:59
François Valade
Re : Helotiale on wet wood
Thank you Zotto.
The species is not keyed in both keys you provided, so it is probably a new species. What is its current status?
I sent you in private a higher quality picture of the ascus base. I still have the collection in the fridge so I will do another trial to show croziers, if there is really ones.
cheers
François
Hans-Otto Baral, 14-09-2016 21:52
Hans-Otto Baral
Re : Hymenoscyphus on wet wood
I am quite sure this shows asci without croziers, so it is clearly my species.

My key is undoubtedly much too old, though I saw this species the first time in 2006.

One of the hundreds of species that cannot be identified with the literature. But this group is complex, you see it in my Phaeoh.-folder.
Michel Hairaud, 14-09-2016 22:24
Michel Hairaud
Re : Hymenoscyphus on wet wood
Bonsoir François, et Zotto,

J'ai récolté cette espèce en août 2009, avec ces caractéristiques (H- et IKI-) dans une zone tourbeuse du Morbihan , également sur du bois très dégradé.
(Cf. images 23 XIII 09 1-5 dans le dossier de Zotto )

Amitiés
Michel