03-03-2026 20:34
Miguel Ángel Ribes
Good eveningThese small, amphora-shaped perithecia
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
01-03-2026 18:46
Robin Isaksson
Hi! This species i se from time to time in the
27-02-2026 17:51
Michel Hairaud
Bonjour, Quelqu'un peut il me donner un conseil p
27-02-2026 16:17
Mathias Hass
Hi, Found this on Betula, rather fresh fallen twi
01-03-2026 14:10
Antonio Couceiro
Hola, me gustaria conocer opiniones sobre este tem
Red perithecia
Lepista Zacarias,
31-01-2020 22:16
I would like to know more about the fungus living on a young oak tree, which is dying. The bark of the tree is covered with black spot that here and there become redish, corresponding to the perithecia seen in the photos.
Measurements:
Asci ~230 x 20 µm
Spores 12-13 x 6 µm, hyaline, 1-septate
there eere also some big brown spores inside the perithecia with 25-35 x 20 µm
Thanks in advance,
zaca
Andreas Gminder,
01-02-2020 11:40
Re : Red perithecia
Hello,
a (decaying) species of Nectria sensu lato in my opinion.
best,
Andreas
a (decaying) species of Nectria sensu lato in my opinion.
best,
Andreas
Christian Lechat,
01-02-2020 11:56
Re : Red perithecia
Hi to all,
yes, Andreas is right, but the identity of the host fungus is essential to guide the research.
All the best,
Christian
Simon Kennedy,
01-02-2020 11:59
Re : Red perithecia
I agree, Andreas. The first thing that might narrow things down a bit, would be to identify the black stromatic material on which the Nectriaceous entiity sits and then look for an appropriate fungicolous species amongst the Nectriaceae. It would be helpful, indeed, to see if there are any mature asci in that black crust. Best of Luck,
Simon
Lepista Zacarias,
01-02-2020 18:10
Re : Red perithecia
My dears Andreas, Christian and Simon,
Thanks for your comments; That's the magic of AscoFrance: You can be lost, but you are not alone.
As I said I think that the host tree is a young oak tree; I will try to confirm that in situ. Meanwhile, I will try to find something on the black crust.
Kind Regards,
zaca
Thanks for your comments; That's the magic of AscoFrance: You can be lost, but you are not alone.
As I said I think that the host tree is a young oak tree; I will try to confirm that in situ. Meanwhile, I will try to find something on the black crust.
Kind Regards,
zaca