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29-01-2020 08:59

Mirek Gryc

HiThis is probably nothing from Ascomycot but thes

28-01-2020 13:39

Valencia Lopez Francisco Javier

Hola a tod@sEstas supuesta Marcelleina están reco

27-01-2020 19:48

Thomas Læssøe

https://svampe.databasen.org/observations/10079407

27-01-2020 09:01

Gilles Corriol Gilles Corriol

Bonjour à tous, Je soumets votre à sagacité un

27-01-2020 17:33

Björn Sothmann Björn Sothmann

Dear all, on Jan 19th 2020, I found some pinkish

27-01-2020 22:33

Björn Sothmann Björn Sothmann

Dear all, on our excursion in the Leyerbachtal in

27-01-2020 20:48

Elisabeth Stöckli

Bonsoir, Trouvé sur un vieux tronc de Picea (Pâ

27-01-2020 15:32

Castillo Joseba Castillo Joseba

He recibido unas muestras secas de esta especie re

26-01-2020 00:07

Ethan Crenson

Hello all,Last week in New York City I found this

26-01-2020 19:46

Elsa Sousa

Good evening,could someone help me beginning to se

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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