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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 08:16

Josep Torres Josep Torres

Hola.Un muy diminuto Pirenomyceto sobre un tronco

11-08-2022 00:45

Stefan Jakobsson

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

10-08-2022 09:11

Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

10-08-2022 18:45

François Bartholomeeusen

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

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

06-08-2022 22:20

Marcus Yeo

I found this ascomycete today on dead leaves of Er

16-07-2022 17:01

Zetti Mario

Hi, I am doing some work with microfungi and durin

02-08-2022 17:48

Pierre-Yves Julien

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

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Inmersed on Carex
Enrique Rubio, 24-04-2014 19:52
Enrique Rubio

Hello forum


I found these minute inmersed fr.bodys on leaves of Carex sp. on a very wet place. The pale lips of the fuitbodys are never fragmented and the hymenium is very pale too. The fusiform asci seem to have a little apical apparatus IKi dirty red, and the ascospores a 3-septate only visible in IKI


I think this fungus could belong to the Naeviaoideae, but I'm not sure


What's your opinion


Thanks again

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Hans-Otto Baral, 24-04-2014 21:49
Hans-Otto Baral
Re : Inmersed on Carex
Hi Enrique

is the inner margin composed of periphysoids? (horizontal hyphae forming a palisade)?

I have no idea. With my database I have only
Phragmonaevia hysterioides Ellis & Ellis p. 529
but that has very elongate apothecia.

Zotto

Enrique Rubio, 25-04-2014 14:31
Enrique Rubio
Re : Inmersed on Carex

Hi Zotto


Unfortunately I don't know how the margin is because I cannot cut it by the very snall size of the apothecia. By the way, today I heve seen the flower of this plant and I know it is not Carex but Iris pseudacorus!

Peter Wilberforce, 25-04-2014 15:45
Re : Inmersed on Carex
Dear Enrique,
This looks very like Karstenia inconspicua, a taxon I described on Deschampsia caespitosa leaves from north Argyll in Scotland.
The species was published in Mycologist Vol.13 Paret 4 in 1999.
The structure was very basic: just a few layers on textura angularis. Spores 3-septate at maturity, 10-12 x 2-3. The fungus was very difficult to see as it as concolorous with the dead leaves.
Hope this helps,
Peter Wilberforce
Hans-Otto Baral, 25-04-2014 16:25
Hans-Otto Baral
Re : Inmersed on Carex
Hi Peter & Enrique

The description of K. inonspicua is indeed similar,  except for the much smaller spore size. The total absence of periphysoids in that species make me wonder where it belongs. Karstenia is impossible because there the paraphysoids are very developed. Cryptodiscus could be another choice, but also there periphysoids are present though only above the hymenium. In both genera the entire hymenium always reacts heimamyloid (strikingly blue in iodine after KOH-treatment). Enrique's specimen seems inamyloid except for the apex.

So I think the fungus is helotialean rather than ostropalean.

Zotto
Enrique Rubio, 25-04-2014 17:03
Enrique Rubio
Re : Inmersed on Carex
Thank you Zotto and Peter
Martin Bemmann, 25-04-2014 22:46
Martin Bemmann
Re : Inmersed on Carex
Hi Enrique,

did you consider Laetinaevia longispora? It obviously occours on a variety of alpine herbacious stems. I personally have no idea of the macroscopy of this species.
Here is the description by Hein 1976.

Best regards
Martin
Peter Wilberforce, 26-04-2014 15:51
Re : Inmersed on Carex
Hi Enrique, If you would like sections made of this material and you have some spare, then I would be happy to do them for you. I have a base-sledge microtome and freezing stage, so it would be no problem. Just let me have some lightly dried material and I'll do it for you.
Postal address is  8 Feryfield Road, Connel, Oban, Argyll, Scotland PA37 1SR
Regards,
Peter
Hans-Otto Baral, 26-04-2014 16:16
Hans-Otto Baral
Re : Inmersed on Carex
Laetinaevia I know only for species without a raised margin, very different from this. Diplonaevia would more fit by macroscopy.

Zotto
Martin Bemmann, 26-04-2014 17:29
Martin Bemmann
Re : Inmersed on Carex
Hi Zotto,

as I said: I have no idea of the appearance of. L. longispora. It was just a proposal...
Are there Diplonaevias with septate spores?

Regards
Martin
Hans-Otto Baral, 26-04-2014 19:16
Hans-Otto Baral
Re : Inmersed on Carex
Hi Martin

Diplonaevia species are mainly non-septate or sometimes 1-septate (Hein 1983), see alo in Cubby. But Enrique's fungus might anyhow belong in that genus.

Zotto
Enrique Rubio, 29-04-2014 18:16
Enrique Rubio
Re : Inmersed on Carex

Many thanks to all.


Hi Peter I'll send you my material for to try the section


 


Thanks!