Accès membres

Mot de passe perdu? S'inscrire

30-03-2026 12:18

Demande d'aide
Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

31-03-2026 08:19

Daldinia childiae parasité
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:03

Dumontinia on Ficaria?
William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Mollisia sur Molinia
Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Lachnum mollissinum ?
Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

27-03-2026 10:47

Stictis cf. friabilis and literature request
Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

28-03-2026 07:55

White Orbilia with allantoid spores
Marc Detollenaere Marc Detollenaere

Hello everybody,Yesterday I found a number of whit

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Trichopezizella barbata?
Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

« < 1 2 3 4 5 > »
Lentomitella?
Björn Wergen, 10-02-2013 13:27
Björn WergenDear friends,

I have recently found a Sordariomycete with very long ostioles and non-septated, hyaline spores with a striate surface. I thought this to be Lentomitella cirrhosa, but I am not sure because of the absence of septa. It spores meassure 14-17x4,3-5,8µm. Asci are 90-125x5-7µm, IKI -, Congo + (deliquescent), with distinct apical structure, spores uniseriate. Lots of periphyses seen in the ostiolus.
Perithecia are partly embedded into the wood surface and are 0,5-0,9 mm. Found on very wet wood (probably aquatic).
There is also a photo which shows an abnormal unispored ascus with a spore about 65x7µm.

What else is possible except Lentomitella?

thanks for help and regards,
björn
  • message #21803
  • message #21803
  • message #21803
  • message #21803
  • message #21803
Alain GARDIENNET, 10-02-2013 14:03
Alain GARDIENNET
Re : Lentomitella?
Perhaps you should look towards Natantiella genus ?
Alain
Alain GARDIENNET, 10-02-2013 14:13
Alain GARDIENNET
Re : Lentomitella?
But Natantiella ligneola has smaller ascospores.
Sorry, I also think it could be Lentomitella tomentosa, but the width fits not well and you haven't said if your one is tomentous.
Conclusion : I don't know. 
Alain
Björn Wergen, 10-02-2013 14:19
Björn Wergen
Re : Lentomitella?
Oh I am so sorry I have forgot the photo of the tomentose outer surface :(((

sorry Alain, here it is. After reading the article about Ceratostomella I have also thought it could be C. tomentosa, but I was very unsure because I did not ever heard something about this species before.

regards,
björn
  • message #21807
Alain GARDIENNET, 10-02-2013 22:15
Alain GARDIENNET
Re : Lentomitella?

I read your first post again and I note you have said that ascospores are striate, aren't they ?

It's a problem because L. tomentosa has smooth ascospores. Thus the size of ascospores of Lentomitella tomentosa is : 13–16(–17) x  (5–)6–7 µm.
Have you tried colouring agents or Melzer ? Sometimes, it shows septation difficult to locate. 
Alain
Björn Wergen, 10-02-2013 23:26
Björn Wergen
Re : Lentomitella?
Of course, I have tried with Melzer, but there is no septation. I also thought the spores are immature and because of this without any septation. Striate ornaments were detected on several spores in H2O and especially in cotton blue, but very hard to photograph.

it seems to be a L. cirrhosa variation just without septation (?).

regards,
björn