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28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

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Unknown ascomycete
Ibai Olariaga Ibarguren, 06-06-2015 15:51

Hello,

I am struggling with a very characteristic ascomycete. Maybe someone can provide a clue. It is probably cleistothecial. The ascomata are globose, non-collabent when dry, with short setae, and appear to be associated with a reddish brown anamorphic state, which can be seen in the macro photos. The spores are very characteristic, ovoid in outline, 1-septate, and brown, 5-5.5 x 4-4.5 µm. Asci unitunicate without a well developed apical apparatus, IKI and KOH + IKI negative. Found inside Sambucus bark in Sweden. Scale bars = 10 um.


Many thanks in advance!


Ibai.

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Thomas Læssøe, 06-06-2015 16:10
Re : Unknown ascomycete
Try Syspatospora and thereabouts. :-)
Ibai Olariaga Ibarguren, 07-06-2015 12:06
Re : Unknown ascomycete

Thank you Thomas!

I will search in that direction.

Cheers,

Ibai.

Paul Cannon, 07-06-2015 16:25
Re : Unknown ascomycete
Maybe Thomas meant Synaptospora?
Thomas Læssøe, 07-06-2015 21:11
Re : Unknown ascomycete
I did :-) (not the first time I misremember this name)
Adrian Carter, 08-06-2015 12:12
Re : Unknown ascomycete
Hello All:

I have found something similar in PEI Canada. Check  Reblova, 2002. Synaptospora olandica. Sydowia 54:282-285.

Good luck.

Adrian Carter
Ibai Olariaga Ibarguren, 09-06-2015 11:33
Re : Unknown ascomycete

Thank you for the tips! Yes, it must be a Synaptospora. Following Reblova´s key in Sydowia, it keys out as S. olandica, but I did not see spores fusing in pairs, and they look like darker even within asci. The anarmorph state I have seen fits the one described by Reblova for S. olandica, but the conidia were not septate. I will leave it as S. cf. olandica for now.

Thank you all!

Cheers,

Ibai.

Björn Wergen, 09-06-2015 14:46
Björn Wergen
Re : Unknown ascomycete
Hi there,

OOOOH hey, maybe you can send me this collection for study? It is maybe the same found on freshwater logs in austria, where I did not manage to find any more fruitbodies.

This species was originally identified by Fournier with probably acuatic ecology. I think we do not know if it really belongs to Helminthosphaeria, but I guess it does.


regards,
björn
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Ibai Olariaga Ibarguren, 09-06-2015 15:46
Re : Unknown ascomycete

Oh yes, thanks! Your fungus looks the same! The specimen is in UPS but I can try to make it available for you. I will email you privately on this. 

Cheers! 

Ibai.
Václav Pouska, 26-06-2015 14:04
Re : Unknown ascomycete
Hello,
I accidentally collected something similar but it is probably closer to Synaptospora olandica. It was not on a broad-leaved tree but on the bare wood of Picea abies (mountain forest in the Czech Republic). Sporocarps are clearly less than 0.5 mm wide, max. 0.2 - 0.3 mm. Photos and a drawing are attached.
I have no experience with these species. What do you think about it?

Thanks,
Vaclav

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Björn Wergen, 06-07-2015 14:14
Björn Wergen
Re : Unknown ascomycete
Hi Vaclav,

to ID an unkwon ascomycete, photos of microstructures will always help. I can hardly interpret how the spores had looked like under the microscope, each species has its own characteristics, even if these are very inconspicuous. On drawings these features get lost quickly (unless you draw so brilliantly that it looks like a photo...).

regards,
björn
Václav Pouska, 29-07-2015 09:55
Re : Unknown ascomycete
Hi Björn,
I have tried to take photos through the ocular...
The magnification of objectives is 40x and 60x so one scale is 2.5 um and 1.66 um, respectively.

Václav
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