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01-03-2024 18:06

Marc Detollenaere Marc Detollenaere

Dear Forum,On unidentified moss I found some small

01-03-2024 23:06

éric ROMERO éric ROMERO

Bonjour, Sur laissée de mustélidé indeterminé

02-03-2024 12:37

Bernard Declercq Bernard Declercq

Hello,I am looking for a pdf of following paper:Ud

29-02-2024 10:42

Charles Grapinet Charles Grapinet

Hello, Yesterday I found a Periconia on a dead Ae

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Yannick Mourgues Yannick Mourgues

On Fagus decorticated wood near a stream. Diametr

29-02-2024 16:43

Malcolm  Greaves Malcolm Greaves

Can someone suggest what this might be. It is deve

25-02-2024 19:50

Robin Isaksson Robin Isaksson

Found this one 3-4 times on resin in SwedenAsci IK

24-02-2024 15:15

Louis DENY

Bonjout ForumTrouvé à Belfort (400m altitude), s

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Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia España reco

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Help with a Hymenoscyphus
Martin Bemmann, 16-10-2009 19:10
Martin BemmannHi,

collected this on tiny dead branche of Aruncus(?) today in my garden:
  • message #9266
Martin Bemmann, 16-10-2009 19:13
Martin Bemmann
Re:Help with a Hymenoscyphus
Asci are 95x 10 µm and spores 17,5-18,5X4,8-5 µm.

  • message #9268
Martin Bemmann, 16-10-2009 19:22
Martin Bemmann
Re:Help with a Hymenoscyphus
Paraphyses have a coarse surface and the pori (poruses) of the Asci are IKI +

Any help very much appreciated!

Regards,

Martin

  • message #9269
Martin Bemmann, 16-10-2009 20:07
Martin Bemmann
Re:Help with a Hymenoscyphus
I forgot to mention ... apothecia are very small (0,3-0,5 mm/dm).

Regards again, Martin
Hans-Otto Baral, 16-10-2009 20:57
Hans-Otto Baral
Re:Help with a Hymenoscyphus
The paraphyses are probably not ciarse but multiguttulate when alive, and very irregular in content when dead, maybe you took this for a surface structure. The homopolar biguttulate spores clearly points to H. macroguttatus. To be sure you shuld verify the presence of croziers.

Zotto
Martin Bemmann, 16-10-2009 21:19
Martin Bemmann
Re:Help with a Hymenoscyphus
Hi Zotto,

Whow! macroguttatus is a striking guess! I compared my pictures with those on your DVD. Now I will try to find croziers. Sadly those asci are mostly broken above the critical point. But let's have a try.

Regards,
Martin
Hans-Otto Baral, 16-10-2009 21:30
Hans-Otto Baral
Re:Help with a Hymenoscyphus
Its best to make a section and, as your materail is dead, mount in KOH.

By the way I would like to note your locality and date.

Zotto
Martin Bemmann, 16-10-2009 21:39
Martin Bemmann
Re:Help with a Hymenoscyphus
I have KOH 3% at hands, would this be OK?
Locality is Heidelberg/Ziegelhausen and date by today.

Cheers,

Martin
Hans-Otto Baral, 16-10-2009 21:42
Hans-Otto Baral
Re:Help with a Hymenoscyphus
thanks. Yes, even 1% is o.k.

The twig could also be Reynoutria, or? Why are you unsure?

Zotto
Martin Bemmann, 16-10-2009 22:01
Martin Bemmann
Re:Help with a Hymenoscyphus
I am unsure, because I am an ignorant! ;-) I will send you a photo of the possible host by tomorrow. It's black dark out there by now. But Reynoutria isn't it. This one is creeping all over my Laburnum and has small leaves.

Regards, Martin
Martin Bemmann, 17-10-2009 20:05
Martin Bemmann
Re:Help with a Hymenoscyphus
Hi Zotto,

my sceptizism about my determination of the host plant was justified by my closer examination. Your proposal of a Polygonum species was the right direction. In fact, I think it is Fallopia convolvolus.
Martin Bemmann, 17-10-2009 20:08
Martin Bemmann
Re:Help with a Hymenoscyphus
Searching croziers, I am very much unexperienced.
Is this we are looking for?
The host, by the way is quite cleare, since I found lots of ascocarps on still attached twigs of the living plant today.

Regards, Martin
  • message #9307
Martin Bemmann, 17-10-2009 20:15
Martin Bemmann
Re:Help with a Hymenoscyphus
PS: I dont know why my photo of the host plant doesn't appear in the previous post. I try here again.

  • message #9308
Stip Helleman, 17-10-2009 23:07
Stip Helleman
Re:Help with a Hymenoscyphus
Hi Martin,
This is a real crozier, the plant i don't know either.
Stip
Martin Bemmann, 17-10-2009 23:14
Martin Bemmann
Re:Help with a Hymenoscyphus
Hi Stip,

this makes me happy! :-)
I was searching through lots of preparations to find something worth to be called "croziere" ;-)
But I was convinced to have Zottos guess H. macroguttatus even before. The pictures on the DVD of this species are so close to mine.

Cheers,

Martin
Hans-Otto Baral, 18-10-2009 10:12
Hans-Otto Baral
Re:Help with a Hymenoscyphus
Everything is o.k., and the plant I think is Fallopia

thank!
Zotto
Martin Bemmann, 18-10-2009 10:47
Martin Bemmann
Re:Help with a Hymenoscyphus
Thank YOU for your assistance!

Best regards,
Martin