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04-12-2025 23:53

Malcolm  Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

04-12-2025 21:30

Ethan Crenson

Hello all, I am looking for the following:  Bar

02-12-2025 18:59

Malcolm  Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

03-12-2025 20:02

Buckwheat Pete

Hello everyone, does anyone know the genus Godroni

02-12-2025 19:25

Buckwheat Pete

Hello, can anyone identify this hairy fungus growi

02-12-2025 14:28

Mirek Gryc

527 / 5 000Hello everyoneThey grew on dead shoots

30-11-2025 12:53

Edvin Johannesen Edvin Johannesen

White short-stipitate apothecia found on thin twig

30-11-2025 10:47

William Slosse William Slosse

I recently found a collection of small Peziza sp.

27-11-2025 12:01

Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

Thomas Læssøe

https://svampe.databasen.org/observations/10493918

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Pyreno on alnus sp.
Maren Kamke, 26-04-2013 22:33
Maren KamkeHello,

I found a pyrenomycete on alnus sp. (maybe some other angiospermae).


The diameter is up to 0,2 mm. Spores 18-22 x 3,5 – 4,5 µm hyalin, with many guttules, 1-septate. Asci 8 spores without iodine porus reaktion, 95 x 8 µm.


Maren

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Björn Wergen, 27-04-2013 00:03
Björn Wergen
Re : Pyreno on alnus sp.
Hi Maren,

quite looks like Chaetosphaeria, did you also see 3-septated spores (at maturity)? And conidia? This is important for determination.

regards,
björn
Maren Kamke, 27-04-2013 07:27
Maren Kamke
Re : Pyreno on alnus sp.
Hi Björn,
thank you. In majority the spores are only 1-septate. I found only one bigger (33x5 µm) which was 2-septate. Conidia are hyalin (5x2 µm). The spores have appendixes at maturity.
regards
Maren
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Maren Kamke, 05-05-2013 20:25
Maren Kamke
Re : Pyreno on alnus sp.
Hello again,
I suppose, I have identified this one, I found similar fruitbodies yesterday. It might be Zignoella (Chaetospharia) ovoidea.
Maren