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Mot de passe perdu? S'inscrire

29-09-2022 20:26

Elisabeth Stöckli

Bonsoir, Trouvé à 2'500 m (prairie alpine), tai

05-10-2022 14:35

Viktorie Halasu Viktorie Halasu

Hello,I've found here a Hypoxylon (or Hypomontagne

04-10-2022 18:38

Juuso Äikäs

These little brown, hairy apos were growing on a d

01-10-2022 11:54

DirkW DirkW

chers collègues, anyone out there who could send

05-10-2022 16:09

JEAN CABALION

Bonjour, Qui peut me renseigner sur ce Podostroma

24-10-2021 21:50

Robin Isaksson Robin Isaksson

Hi,Found on Andreaea rupestris sweden.ascomata bl

29-09-2022 17:25

Juuso Äikäs

A finding from a couple days ago: a few white Hyme

29-09-2022 13:34

Marja Pennanen

Dear colleagues, a couple of days ago I found the

13-12-2014 21:47

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas imágenes de un disco neg

26-09-2022 15:31

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,please, can this be something else than Hypo

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Anamorph on Ulmus twig related to Splanchnonema foedans???
François Bartholomeeusen, 10-08-2022 18:45
Good evening all,

On 5 August 2022, a friend gave me a piece of a branch of Ulmus (13 cm long, 2.5 cm in diameter) covered with an anamorph. Under those white/pink spots, the bark was covered with green algae and lichens.
The conidia with 1 sept (slightly off-centre and slightly contracted there) have the following dimensions: 20.3 - 24.5 × 10.6 - 12.7 µm; Q = 1.8 - 2.2 ; Me = 22.5 × 11.6 µm .


When wiping off those downy spots I found white bumps in the bark, under which were black perithecia with 1 ostiole that contained very dark spores with following dimensions:
43 - 55.5 × 18.6 - 22.6 µm; Q = 2 - 2.7; Me = 50 × 20.9 µm.


Due to the age of the branch, the prevailing dryness and heat, the material to be examined was in poor condition. With the key of ME Barr Mycotaxon Vol XV 1982 I could identify the ascomata as: Splanchnonema foedans.


My question is twofold: 1) Can someone confirm my determination?
2) Is the anamorph related to S. foedans and can it be identified?


Many thanks in advance,


François Bartholomeeusen

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François Bartholomeeusen, 10-08-2022 18:50
Re : Anamorph on Ulmus twig related to Splanchnonema foedans???
Herewith some more pictures with regard to the asco Splanchnonema foedans!

François Bartholomeeusen
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Bernard Declercq, 11-08-2022 20:03
Bernard Declercq
Re : Anamorph on Ulmus twig related to Splanchnonema foedans???
Hi François,

This is Splanchnonema foedans indeed, most probably a new species for Flanders.
The anamorph is Arthobotrys-like.

All the best,
Bernard
François Bartholomeeusen, 11-08-2022 21:15
Re : Anamorph on Ulmus twig related to Splanchnonema foedans???
Thank you very much Bernard,

Despite the poor condition of the substrate, this is still a good find. Your choice for Arthrobotrys is more than plausible. I'm leaving for a week in the coolness of the coast and will try to elaborate on this find upon my return.
Thanks again for your reaction,

François