Accès membres

Mot de passe perdu? S'inscrire

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

28-02-2026 11:05

Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

03-03-2026 20:34

Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningThese small, amphora-shaped perithecia

28-02-2026 11:54

Alain GARDIENNET Alain GARDIENNET

Hi forum,Is anyone aware if the 1936 edition of Si

02-03-2026 22:07

Jorge Hernanz

Buenas noches!Entre musgos, bajo Pinus halepensis

01-03-2026 18:02

Francois Guay Francois Guay

I found this mystery Helotiales on an incubated le

28-02-2026 14:43

Alain GARDIENNET Alain GARDIENNET

A new refrence desired :Svanidze, T.V. (1984) Novy

01-03-2026 18:46

Robin Isaksson Robin Isaksson

Hi! This species i se from time to time in the

26-02-2026 22:06

Malcolm  Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

« < 1 2 3 4 5 > »
Small pinkish ascomycete
Joaquin Martin, 11-10-2022 19:32
Hi

I found this small ascomycete on juncus, it has a pinkish tone very soft.
The rest of features show in the pics.
Thanks for yours responses.

  • message #74053
  • message #74053
  • message #74053
  • message #74053
  • message #74053
  • message #74053
Michel Hairaud, 11-10-2022 21:51
Michel Hairaud
Re : Small pinkish ascomycete
Hi Joaquim,
The paraphyses content (Homogenous vacuolary bodies) and septate spores match a Calycina species Also the apparently ascus apex red iodine reaction. Some Calycina species easily turn red when bruised but here it seems that not all apos get this pinkish colour and I wonder whether it could be generated by bacteria ? 
AmitiésMichel
Hans-Otto Baral, 12-10-2022 09:59
Hans-Otto Baral
Re : Small pinkish ascomycete
Some things should e clarified: Are the ascus apical rings hemiamyloid or absent? How is the excipulum? Are the spores already septate inside the living asci? When there are two large drops close together in the middle, then the spores are septate (the septum is faintly visible). How is the ectal excipulum?

The spores are rather large and characteristic, but so far I have no idea but appreciate Michel's opinion.
Joaquin Martin, 12-10-2022 11:23
Re : Small pinkish ascomycete
Hi

I think Michael is right, it could be a Calycina and also that it is parasitized, maybe this is the reason why I see the excipulum very dirty and it is not appreciated in the pictures.
I see septate spores inside the asca but not the ones with two drops.
I do not see any apical reaction either.
I hope this clarifies the matter.
Thank you.
  • message #74060
  • message #74060
  • message #74060
Hans-Otto Baral, 12-10-2022 12:10
Hans-Otto Baral
Re : Small pinkish ascomycete
For the iodine reaction oil immersion would be necessary. It is also possible to add KOH, remvoe it with water and test IKI. Then a blue reaction should be better visible than the faint red reaction, if it is really hemiamyloid.

Also for the spore septa oil immersion is required.

The excipulum appears to be small celled. No parasite, this is normal that other fungi grow at the base.
Joaquin Martin, 12-10-2022 15:18
Re : Small pinkish ascomycete
Hi

Yes, clearly a hemiamyloid reaction.
Also, taking advantage of the preparation, the septate spores can be seen.

Best regards
  • message #74063
  • message #74063
Hans-Otto Baral, 12-10-2022 21:21
Hans-Otto Baral
Re : Small pinkish ascomycete
A possibility is that this is Calycellina separabilis. I have placed that fungus in Calycellina because of the distinct stain of the spore gel in CRB, but I am unaware of a sequence of the species.

The substrate is far from typical. Actually, it is always on Rubus (mainly idaeus). Hmmm.
  • message #74066