Accès membres

Mot de passe perdu? S'inscrire

14-08-2022 18:08

Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

14-08-2022 15:50

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,this Orbilia grew on a strongly rotten branc

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

04-07-2022 18:45

Enrique Rubio Enrique Rubio

I can find no suitable answer for this white Bryos

11-08-2022 00:45

Stefan Jakobsson

On a thin deciduous stick (Salix/Alnus/Betula) on

10-08-2022 18:45

François Bartholomeeusen

Good evening all, On 5 August 2022, a friend gave

11-08-2022 08:16

Josep Torres Josep Torres

Hola.Un muy diminuto Pirenomyceto sobre un tronco

10-08-2022 09:11

Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

« < 1 2 3 4 5 > »
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

  • message #64750
  • message #64750
  • message #64750
  • message #64750
  • message #64750
  • message #64750
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.