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21-08-2025 18:09

Semble Thecotheus
Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

20-08-2025 19:04

Adelphella babingtonii - lacking much brown pigment
Ethan Crenson

Hello, This asco was found on the same wood as my

21-08-2025 02:18

Helicoma muelleri?
Stefan Jakobsson

On a necrotic section of a living Tilia cordata I

18-08-2025 23:15

S.vitreola?
Zoe Vélez Zoe Vélez

Hola foro, gracias por aceptar la creación de mi

19-08-2025 20:58

Hymenoscyphus ? on very wet wood
Ethan Crenson

Hi all, Here is what I believe to be a Hymenoscyp

12-08-2025 19:44

Literature request on Clypeosphaeriaceae
Enrique Rubio Enrique Rubio

Could someone send me a pdf copy of this article?S

18-08-2025 15:17

bitunicate ascomycete on dead Sphagnum from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

... on 6.7.25 in a subarctic mire near a small lak

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

19-08-2025 16:27

Strange fungus on rotten Quercus wood in stream
Paul Cannon

Hello all I have spent some time trying to work o

18-08-2025 22:59

Apothecie jaune en toupie
Yanick BOULANGER

BonsoirVoici un asco récolté le 08/08/2025Comme

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Memnoniella echinata ?
Alain GARDIENNET, 22-12-2014 22:31
Alain GARDIENNET

Bonsoir forum,


J'ai trouvé sur graminée des amas (sous forme de petits coussinets) de conidies brunes fortement échinulées, subglobuleuses avec un diamètre proche de 12 µm. Les conidiophores sont morts.


Pourrait-il s'agir de Memnoniella (ex. Stachybotrys) echinata ?


Je n'y crois guère, mais je ne sais dans quelle direction chercher.


Alain


 

  • message #32829
Walter Gams, 22-12-2014 23:56
Walter Gams
Re : Memnoniella echinata ?
Cher Alain, Non, c´est une espèce d´Arthrinium, mais je ne sais pas laquelle. 
Cordialement  Walter
Chris Yeates, 23-12-2014 04:30
Chris Yeates
Re : Memnoniella echinata ?
It certainly does not look like any of the Arthrinium species in Martin Ellis's Mycological Paper 103 (1965) - perhaps it is undescribed?
amitiés
Chris
Alain GARDIENNET, 23-12-2014 07:26
Alain GARDIENNET
Re : Memnoniella echinata ?

Hi nocturnal mycologists,


You're right, it fits better with the genus Arthrinium : macroscopically it reminds me, and the colour of conidiospores fits well, conidiogenese too. But I've never seen a such shape for ascospores in that genus. But if the specialists that you are don't know it ...


Thanks to you for help. I keep  on the side this Arthrinium sp. ("echinata").


Alain