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12-07-2020 16:30

Gilbert MOYNE

Bonjour, Une récolte qui me pose quelques problÃ

12-07-2020 17:42

Juuso Äikäs

I found a lot of these growing gregariously on dea

12-07-2020 21:17

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et à tous,Que pensez-vous de ce

10-07-2020 17:50

Garcia Susana

Hola, Me gustaría vuestra ayuda para identificar

08-07-2020 00:01

Shane John

I would ask the indulgence of the group to perhaps

08-07-2020 16:47

Chris Yeates Chris Yeates

Bonjour tous While searching for the downy mildew

10-07-2020 14:26

Thomas Læssøe

Anybody in the know of eg Pseudoneottispora?See: 

08-07-2020 19:01

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je ne remets plus la main sur mon tiré-à

08-07-2020 20:29

Juuso Äikäs

These were growing on a dead grass stalk in a fore

08-07-2020 18:21

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en mdera si

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Scutellinia scutellata – crinita?
Chris Johnson, 13-10-2014 09:54
Good morning

Found on decorticated wood (probably Fagus), measuring 5-7mm across.
Spores (from a spore-drop): 17.4-20.2 x 11.4-12.7 microns. Low verrucosity and no guttules found.
Setae 430-1200 x 25-45 microns across the range with the longest hairs at the margin. Multi-furcate at the margin, bi- and trifurcate on the lateral setae.
Asci tips blue in Lugol's.

Is the low wart profile sufficient to name this Scutellinia crinita, or should I be looking at other characteristics?

Any help appreciated.

Regards,

Chris
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Beñat Jeannerot, 13-10-2014 10:03
Beñat Jeannerot
Re : Scutellinia scutellata – crinita?
Adio Chris,

In first : Asci not blue on your photo ! And never blue in Scutellinia genus !
In second : 99 % it is S. crinita
In third : S. scutellata is a common name, misused before a long time but designs another species, more rare and more artico-alpine. Therefore, it's a complex, studies are on course.
In last : It's important, in this genus, to see sporal ornementation. Here we can see nothing !

Beñat
Chris Johnson, 13-10-2014 10:04
Re : Scutellinia scutellata – crinita?
I have duplicated an image, I meant to load this one.

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Chris Johnson, 13-10-2014 10:12
Re : Scutellinia scutellata – crinita?
Hello Beñat

Many thanks for the rapid response.

I will try another spore-drop but there was little ornamentation to show.

What are the defining charcteristics of Scutellinia scutellata?

Best wishes,

Chris
Chris Johnson, 13-10-2014 11:13
Re : Scutellinia scutellata – crinita?
Here are some new spore images taken at different depths of field.

Regards,

Chris
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Beñat Jeannerot, 13-10-2014 13:23
Beñat Jeannerot
Re : Scutellinia scutellata – crinita?
Adio Chris,


I don't know but I can see nothing here.
It's important to see "on spore" like the following picture,
About scutellata, it's a complex of species and work isn't finished. But one thing, if you want, spores have obtuse ends and are more fusiform than crinita (Q > 1.7).

Beñat
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Chris Johnson, 13-10-2014 13:32
Re : Scutellinia scutellata – crinita?
Hello Beñat

Ok, many thanks for your help.

Regards,

Chris
Chris Yeates, 13-10-2014 14:31
Chris Yeates
Re : Scutellinia scutellata – crinita?
Hi Chris
that 'blueing' of the ascus apex is an artefact caused by chromatic aberration. The same colour appears here and there throughout that image of the ascus - especially along the edges of the spores.
best wishes
Chris
Chris Johnson, 13-10-2014 15:41
Re : Scutellinia scutellata – crinita?
I can see that now, Chris. I was only looking at the apex at the time.

Regards,

Chris