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08-12-2025 18:59

Lothar Krieglsteiner Lothar Krieglsteiner

.. found by a seminar-participant, I do not know t

07-12-2025 17:43

Malcolm  Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

07-12-2025 16:07

Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiphy

16-03-2014 22:00

Ralph Vandiest Ralph Vandiest

Hello,I found this species a few months ago but ha

08-12-2025 13:39

Thomas Læssøe

https://svampe.databasen.org/observations/10572899

07-12-2025 22:43

Andreas Millinger Andreas Millinger

Good evening, tried to determine with Munks Valsa

05-12-2025 17:33

Bruno Coué Bruno Coué

Bonjour, je serais heureux de recueillir votre avi

06-12-2025 00:19

Viktorie Halasu Viktorie Halasu

Hello, would anyone have this article, please? An

04-12-2025 23:53

Malcolm  Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

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Neonectria sur Fagus (SE Europe)
Stoykov Dimitar, 26-11-2015 16:22
Stoykov DimitarHallo, Dear Friends,

This autumn I came up with an interesting find on bark of beec, which is qutie similar morpholocically to the data about North American - Neonectria faginata in the sence of Rossman et al. (2006) , but has differences on the basis of other than North American distribution and Fagus  grandifoilia.
Ascomata wall KOH (+). Asci about 71-76 x 11-12 micrometers. Spores 10.5-13.6 x 4.5-6.5 micrometers, slightly constricted at the septa.

Kind regards, Dimitar
Christian Lechat, 26-11-2015 17:05
Christian Lechat
Re : Neonectria sur Fagus (SE Europe)
Hi Dimitar,
Neonectria faginata is known only from USA.
All characteristics that you provide fit well with N. coccinea.

 Neo. faginata is easily identified because it is known only on species of Fagus in
North America and produces macroconidia morethan 80µm long when 5-septate.
N. faginata
: Ascospores ellipsoidal to fusiform with narrowly rounded ends,
straight or slightly curved, hyaline, finely spinulose,
1-septate, (8.5–)10.3–12.3(–14.3)×(4.1–)4.4–6.2
(–8.0)µm.
N. coccinea
is distinguishable based on host specificity occurring only on Fagus in Europe. Ascospores ellipsoidal to fusiform with narrowly rounded ends, straight or slightly curved, hyaline, finely spinulose, 1 septate, (9.1–)11.8–14.6(–19.3)×(3.7–)4.9–6.3(–7.6)µm

Regards,
Christian
Stoykov Dimitar, 27-11-2015 09:50
Stoykov Dimitar
Re : Neonectria sur Fagus (SE Europe)
Hi Christian,

Thank you so much for the comments on morphology of both species and detailed descriptions!


Best wishes,

Dimitar