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21-08-2025 18:09

Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

22-08-2025 18:10

Ethan Crenson

Hello everyone,  I found what I think might be P

20-08-2025 19:04

Ethan Crenson

Hello, This asco was found on the same wood as my

22-08-2025 08:41

Masanori Kutsuna

Hello.Can anyone help me to get this article?Liu H

21-08-2025 02:18

Stefan Jakobsson

On a necrotic section of a living Tilia cordata I

18-08-2025 23:15

Zoe Vélez Zoe Vélez

Hola foro, gracias por aceptar la creación de mi

19-08-2025 20:58

Ethan Crenson

Hi all, Here is what I believe to be a Hymenoscyp

12-08-2025 19:44

Enrique Rubio Enrique Rubio

Could someone send me a pdf copy of this article?S

18-08-2025 15:17

Lothar Krieglsteiner Lothar Krieglsteiner

... on 6.7.25 in a subarctic mire near a small lak

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

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Small pyreno on piece of wood
Sergey Markov, 21-02-2021 15:21
I found a lot of small pyrenomycetes on piece of unidentified wood, occupied by Lindtneria leucobryophila. This piece of wood was buried deeply in leaf litter.  I found these pyreno's only on wood from herbarium exsiccata of Lindtneria, and i don't have photos of this pyreno 'in situ', only have photos of dried specimens. On photos 'in situ' only Lindtneria is visible...

Perithecia up to 0.5 mm in diameter, part of them was turned whitish during drying. No hairs on perithecia are visible. Mycelial tomentum present at lower part of them.

Ascospores mostly aseptate, but some multiseptate.

Ascospores measure in Melzer after NH4OH:

(49.04) 52.74 - 64.06 (77.46) × (3.87) 4.72 - 5.82 (6.43) µm
Q = (8.79) 9.76 - 13.00 (15.37) ; N = 41
Me = 58.57 × 5.25 µm ; Qe = 11.27

Ascospores measure in water (from another spcimen)

(46.03) 47.08 - 56.14 (57.19) × (3.89) 4.36 - 5.54 (6.06) µm
Q = (8.59) 9.08 - 11.09 (12.71) ; N = 19
Me = 50.60 × 5.01 µm ; Qe = 10.19

More information is on attached photos.

What this is may be? Lasiosphaeria sp.? Which species?
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Andrew N. Miller, 21-02-2021 15:58
Andrew N. Miller
Re : Small pyreno on piece of wood
Lasiosphaeria ovina

Andy
Sergey Markov, 21-02-2021 16:15
Re : Small pyreno on piece of wood
Thank You very much, Andrew!

I first also assumed this species, but length of ascospores up to 64.06 (77.46) um seems to be very long. Or such greater spore length is normal for this species?
Andrew N. Miller, 21-02-2021 17:45
Andrew N. Miller
Re : Small pyreno on piece of wood
If you only measure 5 or 6 collections, you will find a small range in spore lengths.  I measured over 200 collections of Lasiosphaeria ovina for my Ph.D. and found a very large range in ascospore lengths including up to your longest lengths.

Cheers,
Andy
Sergey Markov, 21-02-2021 17:59
Re : Small pyreno on piece of wood
Thank You again, Andrew!

Now I'm sure it's L.ovina.
Oluna & Adolf Ceska, 21-02-2021 20:45
Oluna & Adolf Ceska
Re : Small pyreno on piece of wood
Cf.: Lasiosphaeria ovina  https://mushroomobserver.org/77713