21-11-2025 11:52
Jean-Luc RangerBonjour à tous, on voit toujours 2 espèces areni
21-11-2025 10:56
Christopher Engelhardt
Very small (~0,5 mm) white ascos, found yesterday
14-11-2025 16:26
Marian Jagers
Hello everyone, On dead wood of Cytisus scoparius
17-11-2025 21:46
Philippe PELLICIERBonjour,Récolté sur bois pourrissant de feuillu
20-11-2025 14:14
Mick PeerdemanFound on the leaves of 'Juglans regia' in the Neth
20-11-2025 13:07
Mick PeerdemanIn January i found these black markings on the dea
20-11-2025 12:38
Mick PeerdemanDear all,Last week i stumbled upon a leaf of ilex
Help with a Hymenoscyphus
Martin Bemmann,
16-10-2009 19:10
Hi,collected this on tiny dead branche of Aruncus(?) today in my garden:
Martin Bemmann,
16-10-2009 19:13
Re:Help with a Hymenoscyphus
Asci are 95x 10 µm and spores 17,5-18,5X4,8-5 µm.
Martin Bemmann,
16-10-2009 19:22
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
Any help very much appreciated!
Regards,
Martin
Martin Bemmann,
16-10-2009 20:07
Re:Help with a Hymenoscyphus
I forgot to mention ... apothecia are very small (0,3-0,5 mm/dm).
Regards again, Martin
Regards again, Martin
Hans-Otto Baral,
16-10-2009 20:57
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
Zotto
Martin Bemmann,
16-10-2009 21:19
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
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
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
By the way I would like to note your locality and date.
Zotto
Martin Bemmann,
16-10-2009 21:39
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
Locality is Heidelberg/Ziegelhausen and date by today.
Cheers,
Martin
Hans-Otto Baral,
16-10-2009 21:42
Re:Help with a Hymenoscyphus
thanks. Yes, even 1% is o.k.
The twig could also be Reynoutria, or? Why are you unsure?
Zotto
The twig could also be Reynoutria, or? Why are you unsure?
Zotto
Martin Bemmann,
16-10-2009 22:01
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
Regards, Martin
Martin Bemmann,
17-10-2009 20:05
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.
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
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
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
Martin Bemmann,
17-10-2009 20:15
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.
Stip Helleman,
17-10-2009 23:07
Re:Help with a Hymenoscyphus
Hi Martin,
This is a real crozier, the plant i don't know either.
Stip
This is a real crozier, the plant i don't know either.
Stip
Martin Bemmann,
17-10-2009 23:14
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
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
Re:Help with a Hymenoscyphus
Everything is o.k., and the plant I think is Fallopia
thank!
Zotto
thank!
Zotto
Martin Bemmann,
18-10-2009 10:47
Re:Help with a Hymenoscyphus
Thank YOU for your assistance!
Best regards,
Martin
Best regards,
Martin