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31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

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Small white ascomycete on Schoenoplectus
Enrique Rubio, 26-08-2020 12:50
Enrique RubioHi to everybody
These small white and subsessile ascomata 0.2-0.3 mm diameter grew gregariously on Schoenoplectus (Scirpus) stems.
The IKI b (Calycina-type) asci have croziers. It has non-lanceolate filiform paraphyses, with a slightly enlarged obtuse apex containing some small refractive VBs (arrowed). The marginal hairs are very inconspicuous and they are made by two or three short cells with a short, subacute terminal element.
I want to think in a Psilachnum species or even a Calycina (turgidella, ellisii...) but this collection doesn't seem to adapt well to anything I know.
Do you have any ideas that could help me?

Many thanks again

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Hans-Otto Baral, 26-08-2020 13:00
Hans-Otto Baral
Re : Small white ascomycete on Schoenoplectus
Hi Enrique

could you send me the pics by mail so I could see the micros in better resolution?

Zotto
Hans-Otto Baral, 26-08-2020 16:31
Hans-Otto Baral
Re : Small white ascomycete on Schoenoplectus
Now it is clear: The Helotium microspis complex. Look in Pezizellaceae, Calycellina. Here in the large-spored folder.

Zotto
Enrique Rubio, 26-08-2020 16:41
Enrique Rubio
Re : Small white ascomycete on Schoenoplectus
Thanks a lot, Zotto.
Enrique Rubio, 26-08-2020 16:46
Enrique Rubio
Re : Small white ascomycete on Schoenoplectus
Could someone scan for me regarding Calycellina microspis in Fungi of the Hebrides Dennis, page 142?
Chris Yeates, 26-08-2020 19:18
Chris Yeates
Re : Small white ascomycete on Schoenoplectus
It isn't there on that page Enrique! Might it be there on a different page under a different name?
Enrique Rubio, 26-08-2020 19:35
Enrique Rubio
Re : Small white ascomycete on Schoenoplectus
Hi Chris
I'm sure I've been confused.
The text with Dennis's combination in Calycellina was in Trans. Bot. Soc. Edinb., 150th anniversary supplement 45(3): 213 (1989) [1988]

Chris Yeates, 26-08-2020 20:28
Chris Yeates
Re : Small white ascomycete on Schoenoplectus
I have a couple of PDFs from that journal - but unfortunately not that one :(

saludos, Chris
Enrique Rubio, 26-08-2020 20:43
Enrique Rubio
Re : Small white ascomycete on Schoenoplectus
Thank you for your efforts, Chris!
Eduard Osieck, 26-08-2020 21:02
Re : Small white ascomycete on Schoenoplectus
The first page of the paper can be seen free of charge ...


Eduard
Hans-Otto Baral, 26-08-2020 21:53
Hans-Otto Baral
Re : Small white ascomycete on Schoenoplectus
Here is what Dennis 1956 made, it is the basis for my identification.
Enrique Rubio, 27-08-2020 00:10
Enrique Rubio
Re : Small white ascomycete on Schoenoplectus
Thank you Chris, Eduard and Zotto
I find it hard to admit that the fungus I asked about is really Karsten's Peziza microspis with spores  6-8 x 1.0-1.5, which also says that asci "apice iodo no tinctae", although later Dennis seems to admit that the minute pore is blued by Melzer's reagent.
Everything seems too confusing...
Hans-Otto Baral, 27-08-2020 08:10
Hans-Otto Baral
Re : Small white ascomycete on Schoenoplectus
You are right, and I am also convinced that there exist several species. But I think that they are closely correlated and that H. microscpis could be the smaller spores variant with a low oil content in the spores. So yours I would name Calycellina aff. microspis. One of them could also be H. turgidellum, I do not see a clue to get more clarity without a very detailed type study. But dennis studied the types of both and a British record. The sketches are both from the type and I see a minute dot at the ascus apex in both sketches.