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06-04-2026 15:04

David Chapados David Chapados

Hi! Could someone help me identifying this specim

29-06-2016 15:18

Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

06-04-2026 21:36

Viktorie Halasu Viktorie Halasu

Hello, could anyone please send me the article wi

06-04-2026 19:40

David Gibbs David Gibbs

Help with this one much appreciated, on rotting Fa

06-04-2026 11:07

Louis DENY

Bonjour forum, Trouvé sur bois de feuillu très d

06-04-2026 16:24

Juuso Äikäs

Last Tuesday I found some tiny white Helotiales gr

05-04-2026 13:33

Sylvie Le Goff

Bonjour à tousPuis avoir votre avis sur ce champi

05-04-2026 20:40

Robin Isaksson Robin Isaksson

Hi!Found i Japan on bark of Abies sp. Spores 35-4

06-04-2026 08:15

Lothar Krieglsteiner Lothar Krieglsteiner

some days ago, on the lower surface of leaf of Que

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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