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20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

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Stalked Asco on decidous wood
Maren Kamke, 09-05-2013 10:52
Maren KamkeHello,
I need your help with a strange asco, which I found on a twig.
The fruitbody is 450 µm high, 350 µm wide at the top. The stalk measures 200x80 µm. The spores are of an unusual color somewhat greengrey with 1 to 2 septa. They are 13-17 x 4-5 µm. Asci are IKL negative 85-88 x 6-7 µm.
Regards Maren
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Hans-Otto Baral, 09-05-2013 10:59
Hans-Otto Baral
Re : Stalked Asco on decidous wood
Obviously a Mycocalicaceae. I suggest Stenocybe, of which I have photos which closely resemble this.
Zotto
Björn Wergen, 09-05-2013 11:03
Björn Wergen
Re : Stalked Asco on decidous wood
Hi Maren,

there is also Phaeocalicium with similar characteristics (there is a species here on ascofrance, P. populinum).

Very interesting.

regards,
björn
Maren Kamke, 09-05-2013 18:21
Maren Kamke
Re : Stalked Asco on decidous wood
Hi Zotto and Björn,
really thats the question Stenocybe or Phaeocalicium?. I found a key to these species http://www.crustose.net/wp-content/uploads/2012/03/Peterson-20120311-Key-For-All-Calicioid-Spp-wIn-Temperate-NoAm-Genera.pdf

I would name it Stenocybe pullatula.

But I'm not familiar with the term "excipulum consisting of 2-3 layers of
sclerotized, periclinally arranged hyphae", can you translate this to German ;).
The substrate is probably alnus, because there were no populus.
I add som pictures of the excipulum.
Regards Maren

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Hans-Otto Baral, 09-05-2013 18:30
Hans-Otto Baral
Re : Stalked Asco on decidous wood
I fear I am unable. And I am not sure whether the term periclinal is applicable in fungi, as it describes 3-dimensional cell division in cormophytes (plants), that do not occur in fungi.

Zotto
Marja Pennanen, 09-05-2013 22:17
Re : Stalked Asco on decidous wood
Hi,

Stenocybe pullatula is very common on dead alnus branches at least here at spring time.
When spores are mature there may be even 3 septas.

Marja