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07-05-2024 00:04

Ethan Crenson

A friend found these black gelatnous cups on a twi

07-05-2024 19:26

Louis DENY

Bonsoir forum Sur tige de rubus fruticosus de l'a

06-05-2024 08:27

Blasco Rafael Blasco Rafael

Hola Buenos días.Alguno de ustedes tiene disponib

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François Bartholomeeusen

Good morning,At the end of an excursion in De Zegg

05-05-2024 12:55

Sylvie Le Goff

Bonjour Peut on dire que les poils soient vitreux?

05-05-2024 09:59

Gernot Friebes

Hello,I failed to identify this anamorph, which gr

19-04-2015 20:20

Enrique Rubio Enrique Rubio

Hi again Could you help me with this paper? NANN

30-04-2024 16:22

François Bartholomeeusen

Dear forum members,On April 25 2024, I found one f

03-05-2024 18:04

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Rubus fr

02-05-2024 20:04

éric ROMERO éric ROMERO

Bonjour, Une question à propos de la réaction a

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What could this be?
Gerrit Jansen, 27-03-2014 15:38
Gerrit JansenHi all,

Could anyone give me an idea what this could be?

Thanks, Gerrit

On fallen branch of Salix. Apothecia diam 0.3-0.4 (0.5) mm, sessile.

Ascus contains 8 spores, iodine positive, 69-66 x 9-10 ?m, croziers present.


Paraphyses cylindrical width 2-3.5 ?m.


Spores non septate, 7-16.5 x 2-3.5 ?m; Qav.=4.4; n=15; spores taken from apothecium in Congo red in 5% ammonia.

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Chris Yeates, 27-03-2014 16:28
Chris Yeates
Re : What could this be?
Hello Gerrit
have you checked to see if there is a KOH reaction?
regards
Chris
Gerrit Jansen, 27-03-2014 16:52
Gerrit Jansen
Re : What could this be?
Hi Chris,
The apothecium turns yellowish greenish in 5% KOH.
Gerrit
Luc Bailly, 27-03-2014 18:30
Luc Bailly
Re : What could this be?
Hi Gerrit,
Also: could you take the size of spores just in water? In Congo read, that will disturb the measures. Check also if the spores aren't septate now and then.
Looking at the spores in water is absolutely necessary, because NH4OH and KOH can influence the number and look of the guttules.

Then, take Andreas Gminder's key: http://www.mollisia.de/Word_Dokumente/key.doc

Cheers - LUC.
Gerrit Jansen, 27-03-2014 21:32
Gerrit Jansen
Re : What could this be?
Hi Luc and Chris,

I measured the spores in water 12.7 x 2.9 um.

Thanks for the link to Andreas Gminders Mollisia key. With your help and the key I quickly arrived at Mollisia fusca.

Problem solved, thanks again.

Regards, Gerrit