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29-08-2025 05:16

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Bonne nuit, Voir si vous m'avez élaguée appor

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Ascomas cupoliformes abiertos lateralmente, himeni

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Unknown species on phragmites leaves
Ralph Vandiest, 23-04-2014 22:29
Ralph VandiestHello,


I found these black small frb on leaves of phragmites, just covered under the upper layer. Size 0,15mm. Spores 3/4 septate and 26/29x6/6,5µm.


Any suggestions?


regards,

Ralph
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Ralph Vandiest, 24-04-2014 12:59
Ralph Vandiest
Re : Unknown species on phragmites leaves
maybe stagonospora but I have no key for this genera ?
Alain GARDIENNET, 24-04-2014 13:46
Alain GARDIENNET
Re : Unknown species on phragmites leaves

Hi Ralph,


Yes it's a Stagonospora species. But giving a species name is more difficult.


Alain

Martin Bemmann, 24-04-2014 18:16
Martin Bemmann
Re : Unknown species on phragmites leaves
Hi Ralph,

below the pages of Sutton 1980 on Stagonospora. Maybe it helps.

Regards
Martin
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Ralph Vandiest, 25-04-2014 22:42
Ralph Vandiest
Re : Unknown species on phragmites leaves
Thx Martin. As spores are < 30 µm long I have 2 choices but none of these 2 apear on phragmites.
regards
Luc Bailly, 28-04-2014 12:26
Luc Bailly
Re : Unknown species on phragmites leaves
Hello Ralph,
It's close to Stagonospora subseriata (most common on Molinia) even if the spores you described are a bit small. I still think it's that one.
Check Ellis & Ellis, or Grove: http://www.cybertruffle.org.uk/cyberliber/01209/0354.htm

Cheers - LUC