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11-10-2022 19:32

Joaquin Martin

Hi I found this small ascomycete on juncus, it ha

10-10-2022 10:08

Juuso Äikäs

These hyaline - pale yellow fruitbodies were growi

07-10-2022 20:49

Edvin Johannesen Edvin Johannesen

Hi!Tiny (0.2-0,4 mm) short-stipitate, circular or

08-10-2022 11:00

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Afin d'améliorer la connaissance de plusi

07-10-2022 15:46

Dragiša Savic

Hi to allCould this be Lasionectria mantuana? Foun

29-09-2022 20:26

Elisabeth Stöckli

Bonsoir, Trouvé à 2'500 m (prairie alpine), tai

05-10-2022 14:35

Viktorie Halasu Viktorie Halasu

Hello,I've found here a Hypoxylon (or Hypomontagne

04-10-2022 18:38

Juuso Äikäs

These little brown, hairy apos were growing on a d

01-10-2022 11:54

DirkW DirkW

chers collègues, anyone out there who could send

05-10-2022 16:09

JEAN CABALION

Bonjour, Qui peut me renseigner sur ce Podostroma

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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.

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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.
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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
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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.
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