12-11-2019 10:32
Miguel Ángel Ribes
Hi againExactly at the same place than my previous
25-12-2019 17:54
Valencia Lopez Francisco JavierHola a todos/asEstas supuestas pezizas estaban en
28-07-2011 18:31
Alex Akulov
Dear FriendsToday I made the pdf file of Velenovsk
12-07-2015 00:05
Nedim Jukic
This one from the same locality as the previous on
30-05-2026 21:12
Philippe PELLICIERSur branche de mélèze (Larix) près de la neige,
31-05-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a rather
25-05-2026 16:35
Bernard CLESSE
Bonjour à toutes et tous,J'ai trouvé récemment,
29-05-2026 15:35
daniel FERREBonjour à tous,Je voudrais votre aide pour cette
One more collection where I could need some help:
Substrate: Strongly decayed coniferous wood
Description:
Perithecia superficial on wood, nearly globose, diameter 0.4-0.5 mm, with a short ostiolar neck of 40-50 µm on top. Perithecial wall dark brown tob lack, slightly rough.
Perithecial surface consisting of brown, globose, rough-walled cells of 15-20 µm in diameter.
Perithecial content reddish. Asci 8 spored, IKI negative, CR positive, 200-250 x 12-13 µm. Spores hyaline to very slightly coloured, 8-11 septate but probably mostly 10 septate (not always easy to count), 75-82 x 4-4.5 µm.
Many thanks,
Stefan
several features of your fungus recall Ceratosphaeria but it is clearly different from C. lampadophora.
I suggest you read Huhndoerf et al, Mycologia, 100(6), 2008, pp. 940–955. DOI: 10.3852/08-037
Best,
Jacques
the outer wall being composed of ± globose cells in combination with the filiform ascospores reminds me of certain Chaetosphaeria species with these characteristic features – there's a paper dedicated to them: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.522.5595&rep=rep1&type=pdf
Most (all?) of these species should have some black setae on the ascomatal wall though, maybe you overlooked them?
See also these nice images of C. ellisii that give you an overwiew of the general features of this group: http://www.discoverlife.org/mp/20q?search=Chaetosphaeria+ellisii&flags=glean:
Let's see if someone else has a better/more specific idea!
Best wishes,
Gernot
PS: Jacques beat me to it – good to see that we had similar thoughts. :-)
Edit: Oops, Jacques mentioned Ceratosphaeria, not Chaetosphaeria. Should have read it more carefully!
thank you very much for the suggestions, I will have a look in these directions.
Stefan
I reexamined my material mostly to search for setae.
However I was not able to observe any.
Nevertheless, I think my specimen fits well in scolecosporous Chaetosphaeria and is for example similar to Chaetosphaeria lapazina which may also lack setae. That will be my working name until better knowledge...
Stefan