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15-03-2017 17:44

Malcolm  Greaves Malcolm Greaves

Is it unusual for the spores of Sarcoscypha austri

15-03-2017 18:16

Michel RIMBAUD

Bonjour,Excusez-moi de m'adresser à ce site pour

16-03-2017 08:09

Angel Pintos Angel Pintos

Hello, can anyone provide this article?Rolland, L.

15-03-2017 19:40

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Deux amies bryologues m'ont apport

12-03-2017 15:59

William Slosse William Slosse

Could this be Lasiobelonium corticale?I have a sli

15-03-2017 18:39

Viktorie Halasu Viktorie Halasu

Hello,I'm trying to determine a Sarcoscypha: Apoth

14-03-2017 10:58

Elsa Sousa

Good morning,Spores fusoid 2-3 gutullate (22.3) 2

14-03-2017 14:03

Castillo Joseba Castillo Joseba

En carrizo (Arundo)A mi me parecen C. claroflava p

11-03-2017 08:18

Salvador Tello

Hola a todos.He recogido estos Ascobolus que ya re

14-03-2017 16:03

Hans Adema Hans Adema

I found a small club shaped asco on Crataegus. It

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Sarcoscypha
Malcolm Greaves, 15-03-2017 17:44
Malcolm  GreavesIs it unusual for the spores of Sarcoscypha austriaca to germinate while still in the ascus? One particular find had lots of spores germinating both outside and inside the ascii.
Mal
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Hans-Otto Baral, 15-03-2017 18:03
Hans-Otto Baral
Re : Sarcoscypha
Germinable spores of all ascomycetes may germinate inside the asci, but only when the asci are dead. Why shouldn't a spore germinate in an ascus when the humidity allows? 

But inside living asci only a few fungi do, by forming ascoconidia. Sarcoscypha does not belong to these.

Living asci are distinctly larger than dead asci, you can easily  make the test with KOH or MLZ, shrinkage is enormous.
Chris Yeates, 15-03-2017 18:19
Chris Yeates
Re : Sarcoscypha
A classic example of forming ascoconidia can be found in Claussenomyces atrovirens.

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Hans-Otto Baral, 15-03-2017 18:31
Hans-Otto Baral
Re : Sarcoscypha
Thanks Chris, you are right for the spores and conidia but the asci are all dead on these pics.

Attached a living and dead ascus of C. atrovirens. The conidia are held together in 8 balls which also contain the remnants of the collapsed ascospores (invisible).
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Chris Yeates, 15-03-2017 18:49
Chris Yeates
Re : Sarcoscypha
Thanks Zotto
I hadn't realised the asci were dead - the photo's were taken in 2013, so I was working backwards when I said that. What are the clues that these are dead? I have edited my former post accordingly.
LG
Chris
Hans-Otto Baral, 15-03-2017 18:58
Hans-Otto Baral
Re : Sarcoscypha
It is a classical example: apical thickening swollen, conidia distributed ácross the entire lumen. Compare my two pics. If you add KOH to the living ascus it will suddenly look light the dead one I posted. f you don't believe, I have a video :-)
Malcolm Greaves, 16-03-2017 10:48
Malcolm  Greaves
Re : Sarcoscypha
Thanks for the information Zotto.
Mal