25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
25-03-2026 20:53
François BartholomeeusenDear forum members,On 23 March 2026, I found sever
23-03-2026 20:16
Miguel Ángel Ribes
Good eveningI'm unable to identify this Coprotus o
24-03-2026 15:44
Åge OterhalsI hope someone can confirm the name of this collec
25-03-2026 15:06
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me confirm
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
25-03-2026 13:54
Enrique Rubio
Does anyone know where I could download Paoletti's
25-03-2026 15:46
Michel Hairaud
Bonjour, Je sollicite de l'aide pour cette récol
24-03-2026 19:59
William Slosse
Hello everyone,On 23/03/26, I found the following
21-03-2026 15:13
Lepista ZacariasHello everyone, Does any one know of any literatu
Hymenoscyphus on wood
Martin Bemmann,
05-07-2010 23:57
Hi all,this one puzzels me lacking clear features. The apothecia grow with a short stipe on a soaked dead and mostly decorticated twig of a broadleave tree. Their colour is cream to yellowish.
I found hundreds of paraphyses (septated and with refractive bodies in the upper segment) but only few asci (c. 75 x 5 µm). No chance to check whether they arise from croziers or not (I made several preparations...). With IKI I could observe a faint blue reaction of the apical apparatus. The few spores I found are scutuloide, 1-septate when mature and filled with 1 big and some smaller oildrops (10,1-12,5 x 3,2-4,2 µm).
My hope is that the overall appearence will remind some of you on a group of species I should look after.
Best regards,
Martin
Martin Bemmann,
05-07-2010 23:58
Re:Hymenoscyphus on wood
closer view:
Martin Bemmann,
05-07-2010 23:58
Re:Hymenoscyphus on wood
a section showing the texturae of the different layers:
Martin Bemmann,
05-07-2010 23:59
Re:Hymenoscyphus on wood
an immature ascus:
Martin Bemmann,
05-07-2010 23:59
Re:Hymenoscyphus on wood
ascus with IKI:
Martin Bemmann,
06-07-2010 00:00
Re:Hymenoscyphus on wood
paraphyses:
Martin Bemmann,
06-07-2010 00:00
Re:Hymenoscyphus on wood
and spores:
Marja Pennanen,
06-07-2010 01:18
Re:Hymenoscyphus on wood
Hello Martin,
this looks like Hymenoscyphus vernus, which I've found on wet wood.
Except that the spores were not septate and I've not mentioned too many papaphyses ;)
Anyway the paraphyses had many droplets and were a little longer than asci.
But my determinations may not always be rock solid ;)
Greetings:Marja
this looks like Hymenoscyphus vernus, which I've found on wet wood.
Except that the spores were not septate and I've not mentioned too many papaphyses ;)
Anyway the paraphyses had many droplets and were a little longer than asci.
But my determinations may not always be rock solid ;)
Greetings:Marja
Hans-Otto Baral,
06-07-2010 08:31
Re:Hymenoscyphus on wood
Hi Martin & Marja
good to see that you try idetification yourself, Marja! I think it is the close H. kathiae. H. vernus has often a longer stipe (but must not), and the spores not so much oil. Septa often occur in overmature stages in many species.
Important would be the ascus base (H- in vernus, H+ in kathiae and imberbis). With KOH+CR I usually easily see whether there are croziers or not. Or in the living state in a section without squashing.
Zotto
good to see that you try idetification yourself, Marja! I think it is the close H. kathiae. H. vernus has often a longer stipe (but must not), and the spores not so much oil. Septa often occur in overmature stages in many species.
Important would be the ascus base (H- in vernus, H+ in kathiae and imberbis). With KOH+CR I usually easily see whether there are croziers or not. Or in the living state in a section without squashing.
Zotto
Martin Bemmann,
06-07-2010 15:07
Re:Hymenoscyphus on wood
Thank you Marja and Zotto!
I tried to find croziers and I am pretty sure there are. I could see them better while focusing, then I could photograph them.
Well, H. kathiae! The data on the DVD are fitting well, too. Thank you again.
Best regards,
Martin
I tried to find croziers and I am pretty sure there are. I could see them better while focusing, then I could photograph them.
Well, H. kathiae! The data on the DVD are fitting well, too. Thank you again.
Best regards,
Martin
