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03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

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.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

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Andgelo Mombert Andgelo Mombert

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31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

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Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

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éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

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Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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Nectria on Urtica, anamorph and teleomorph
Riet van Oosten, 18-02-2019 14:46
Riet van Oosten
Hello,

Found by a mushroomfriend on Urtica. He gave me a name: Macroconia leptosphaeriae.

Could this be this species? Anamorph and teleomorph? I haven't seen asci ....

Spores : 17.7-17.9-21.5-22.0-22.7 x 6.9-7.2-7.2-7.3-7.3 µm

Conidia: 49.6-60.7-66.5-72.3 x 5.7-6.3-6.8-7.0 µm

Greetings, Riet
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Edvin Johannesen, 28-02-2019 09:02
Edvin Johannesen
Re : Nectria on Urtica, anamorph and teleomorph
The black one, orange one, or both?
Lothar Krieglsteiner, 28-02-2019 09:10
Lothar Krieglsteiner
Re : Nectria on Urtica, anamorph and teleomorph

the red one -


the black one should be the substrate - old Leptosphaeria acuta`(?)


Best, Lothar

Edvin Johannesen, 28-02-2019 10:20
Edvin Johannesen
Re : Nectria on Urtica, anamorph and teleomorph
Thanks, Lothar - I suspected the black one was the substrate (and not Urtica).
Mlcoch Patrik, 28-02-2019 13:19
Mlcoch Patrik
Re : Nectria on Urtica, anamorph and teleomorph
No, this is Leptosphaeria doliolum, it have concentric-conical pseudothecia.
Riet van Oosten, 28-02-2019 16:03
Riet van Oosten
Re : Nectria on Urtica, anamorph and teleomorph
Found the emails for the replies in my spambox, therefore my late respons.

Thank you very much for your confirmation and the information Patrik!

It was difficult to see but I thought the conidia came out of the black ones...
So I was wrong. 
Luc Bailly, 02-03-2019 23:37
Luc Bailly
Re : Nectria on Urtica, anamorph and teleomorph
Hi all,

The anamorph of a Leptosphaeria would be Phoma-like, conidia's included.

Cheers - LUC.
Riet van Oosten, 03-03-2019 09:36
Riet van Oosten
Re : Nectria on Urtica, anamorph and teleomorph
Hello Luc,
Thank you for your explanation!
Greetings, Riet