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30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

29-06-2025 18:11

Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Peter Welt Peter Welt

I'm looking for: RANALLI, M.E., GAMUNDÍ, I.J. 19

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

27-06-2025 14:09

Åge Oterhals

I found this pyrenomycetous fungi in mountain area

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Une hélotiale sur aiguilles de Larix
Michel Hairaud, 11-09-2021 12:37
Michel HairaudBonjour,

Je ne parviens pas à trouver de nom pour cette hélotiale récoltée sur feuilles au sol de Larix en Vanoise à 1750 m d'altitude . 
Apos urcéolées < 0,5 mm à cellules marginales plus claires 
Asques H+, IKI + de type Calycina 95-110 x 12-13
Spores biguttulées, hétéropolaires, 17-20 x 5,5-7  (guttules -> 4 µm)
Paraphyses sans VBs évidentes dans H2O mais faiblement colorées par le CRB 
Cellules marginales soit obtuses x 10 µm, soit élancées , hyalines, x 5 µm 
Ectal prismatique avec des masses peu refringentes
Medulla intricata d'hyphes parallèles. 

Merci pour toute aude apportée Amitiés. Michel 
  • message #70063
  • message #70063
  • message #70063
Hans-Otto Baral, 11-09-2021 21:08
Hans-Otto Baral
Re : Une hélotiale sur aiguilles de Larix
Hi Michel

can you send a photo of the amyloid ring please?

I could nit find anything similar in my database when considering larix needles and this spore size.

Zotto
Michel Hairaud, 11-09-2021 22:33
Michel Hairaud
Re : Une hélotiale sur aiguilles de Larix
Thanks, 

Here it is in IKI
The striking feature in spores is the guttulation
Michel
  • message #70069
Hans-Otto Baral, 11-09-2021 23:30
Hans-Otto Baral
Re : Une hélotiale sur aiguilles de Larix
Hmm, this ascus apex is broadly conical with a truncate tip. This does not sound to me like Calycina, but could well relate to Rutstroemiaceae, although being comparatively thin-walled. No idea of a genus or species.
Michel Hairaud, 13-09-2021 11:26
Michel Hairaud
Re : Une hélotiale sur aiguilles de Larix
Merci encore, 
I had not paid enough attention to the ascus truncate aspect so I have tried new pics from an exsic sample to get more precisions about the IKI reaction shape. 
I canot really find here a typical Rutstroemiaceae reaction. Can you ? 
I can see that such spore shape and content can be found in that familly, though. 

Because of the hairy margin I would have placed it in the former Nannfeld Hyaloscyphaceae but could not find any matching genus in the now Hyaloscyphaceae nor in the Pezizellaceae. 

Amitiés
Michel




  • message #70081
Hans-Otto Baral, 13-09-2021 11:52
Hans-Otto Baral
Re : Une hélotiale sur aiguilles de Larix
very good! It really resembles Sclerotiniaceae s.l. much more than Calycina, but is not fully typical. I have the same problem as you, so I placed your find in my Helotiales incertae sedis folder.
Michel Hairaud, 14-09-2021 10:35
Michel Hairaud
Re : Une hélotiale sur aiguilles de Larix
At least, we can place it in Helotiales -:) 
If we have some euros left, we might see if sequencing would bring some light on it 
Here is the collection data :
- MH 120821 on Larix sp. dead leaves on drained regularly overflooded ground. 
- France, Modane,  Parc National de la Vanoise, Vallon de Polset , near the  ruisseau de St Bernard, alt 1980 m . Leg N. Vanvooren. 

Amitiés et merci encore. 
Michel

Hans-Otto Baral, 14-09-2021 11:07
Hans-Otto Baral
Re : Une hélotiale sur aiguilles de Larix
Thanks! Is your number bulid from the date?
Michel Hairaud, 14-09-2021 11:21
Michel Hairaud
Re : Une hélotiale sur aiguilles de Larix
Collection date is 2021 09 01
(My ref is the 12th studied collection in the Alp foray started in August ) Michel