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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

14-07-2025 11:19

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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"Nectria" on Sarothamnus (Cytisus) scoparius in Germany
Lothar Krieglsteiner, 19-11-2019 17:35
Lothar Krieglsteiner

... also in National Park Eifel, Germany, 16.11.2019.


There is no KOH-reaction, so this can not be an Nectria(ceae).


The spores are 1-septate, and about (8)-9-11,5/2,5-3,5 µm, with oil 3.


The perithecia look rough under the lens (maybe like Nectria cinnabarina), but not notably hairy.


Can somebody provide me with a hint?


Best, Lothar

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Christian Lechat, 19-11-2019 18:38
Christian Lechat
Re : "Nectria" on Sarothamnus (Cytisus) scoparius in Germany
Hi Lothar,

if there are numerous oily droplets in ascomatal wall and hymenium, you should consider Clonostachys, but did you test ascomata in lactic acid?

Christian
Lothar Krieglsteiner, 19-11-2019 18:51
Lothar Krieglsteiner
Re : "Nectria" on Sarothamnus (Cytisus) scoparius in Germany

Hello Christian,


thank you very much for your repeat!


I think there was a lot of oil in the structures you mention.


I did not test lactic acid - I will try to do this soon.


Best regards, Lothar

Lothar Krieglsteiner, 22-01-2020 16:27
Lothar Krieglsteiner
Re : "Nectria" on Sarothamnus (Cytisus) scoparius in Germany

Hello Christian - and other readers,


in the meantime I received lactic acid (I did not have and it was not so easy to get!) and now I prepared one ascoma in this medium. The red colour is changing into (orange) yellow.


Does this mean it is Clonostachys? And can there be a proposal for a species? Is there a key for the species of this genus?


Thanks and best regards, Lothar

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Christian Lechat, 22-01-2020 18:40
Christian Lechat
Re : "Nectria" on Sarothamnus (Cytisus) scoparius in Germany
Hi Lothar,

it is not Clonostachys because the change of colour in lactic acid.

It is a species of Nectriaceae. But without asexual morph it is impossible to know the genus, although I suspect a fusarium-like asexual morph.

Christian
Lothar Krieglsteiner, 23-01-2020 11:33
Lothar Krieglsteiner
Re : "Nectria" on Sarothamnus (Cytisus) scoparius in Germany

thank you very much, Christian!


I will try to find an anamorph on the twig - if I am successful I will write again.


Best regards, Lothar