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11-03-2025 13:10

Blasco Rafael Blasco Rafael

Hola, alguna idea para esta especie ??Recogida sob

17-12-2024 20:05

Lothar Krieglsteiner Lothar Krieglsteiner

in the Algarve, Serra Monchique, on old Xylaria ci

11-03-2025 17:27

Lothar Krieglsteiner Lothar Krieglsteiner

I hope it is o.k. to ask this question here. As y

11-03-2025 18:48

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je suis à la recherche d'une collection (

11-03-2025 17:22

Lothar Krieglsteiner Lothar Krieglsteiner

found last November in the Algarve, Serra Monchiqu

11-03-2025 15:18

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

08-03-2025 14:54

Ethan Crenson

Hello all, This is a recent find from New York Ci

11-03-2025 10:16

Michel Hairaud Michel Hairaud

Bonjour , Récolte sur tronc mort de Carpinus. Fo

10-03-2025 22:26

Michel Hairaud Michel Hairaud

Bonjour, Je sollicite de l'aide pour mettre un no

10-03-2025 18:51

Juuso Äikäs

These apparent Cryptodiscus fruitbodies with a pal

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Clypeosphaeria mamillana?
Jenny Seawright, 28-03-2015 00:09
Jenny SeawrightHello all,

This was found on a dead Eupatorium stem and the closest I can come is possibly Clypeosphaeria mamillana, though in Ellis that is given for twigs of Acer, Cornus and Quercus. Perithecia initially immersed.

Spores becoming brown and faintly 3-septate, 20-24 x 6(-7) µm.Asci tips immediately blue in Lugols. (Is it correct to describe that as IKI+blue, euamyloid?) I tried adding KOH but wasn;t very successful ....

With regards,
Jenny

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Alain GARDIENNET, 28-03-2015 06:27
Alain GARDIENNET
Re : Clypeosphaeria mamillana?

Hi Jenny,


Yes it is, I think.


It has already been seen on Rubus, Rosa, Lonicera... why not Eupatorium ?


Alain

Jenny Seawright, 28-03-2015 09:40
Jenny Seawright
Re : Clypeosphaeria mamillana?
Thank you Alain
Chris Yeates, 28-03-2015 17:06
Chris Yeates
Re : Clypeosphaeria mamillana?
Those brown septate / pseudoseptate (?) ascospores certainly look like those of a Clypeosphaeria. The only Clypeosphaeria species for which I have decent descriptions / images are this and C. notarisii. If anyone has access to Barr's paper in Systema Ascomycetum 8 (1989) it would be very useful . . . .

Cordialement
Chris