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08-10-2018 14:51

Edvin Johannesen Edvin Johannesen

I came across these dense mats of apothecia seated

18-10-2018 10:37

Bernard Declercq Bernard Declercq

Hello, Can anyone supply me following paper? Pa

17-10-2018 07:10

Ethan Crenson

In Northeastern North America.  On the banks of a

15-10-2018 18:55

hannie wijers

Hello, I'd like some help if possibleIn Beilen I

16-10-2018 23:33

Valencia Lopez Francisco Javier

Hola a todos/asPeziza recolectada en el sur de Esp

03-10-2018 22:13

François Bartholomeeusen

Good evening forum members,Can this be Hyalorbilia

14-10-2018 19:25

Marja Pennanen

Hi, on a Populus leaf among other things, I found

15-10-2018 10:52

Castillo Joseba Castillo Joseba

Del pasado sabado en bosque de avellanos,   pare

14-10-2018 22:24

Castillo Joseba Castillo Joseba

De ayer sobre tierra en terrenos de cultivo con av

10-10-2018 23:11

Viktorie Halasu Viktorie Halasu

Hello forum,I would like to ask how to call correc

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Stalked yellowy cup
Malcolm Greaves, 01-10-2018 16:46
Malcolm  Greaves
Can someone point me in the right area for this yellow/orange stalked cup. It was on a small branch under Fraxinus and Salix. No hairs but almost striate outer surface. No sign of bluing with meltzers and the spores are 13.5 x 4.5.

Thanks

Mal
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Hans-Otto Baral, 01-10-2018 16:58
Hans-Otto Baral
Re : Stalked yellowy cup
This could be Hymenoscyphus consobrinus, but the spores are too unsharp to see welll their contents, and usually this species has an amyloid ring in Lugol.

The paraphyses should be figured (in living state) and also the ascus base checked for croziers.
Zotto
Malcolm Greaves, 01-10-2018 22:00
Malcolm  Greaves
Re : Stalked yellowy cup
Thanks Zotto. I have tried to get better photos showing the relevant details. There seems to be no reaction in the asci with lugol but the paraphyses which are granular did look to develop a slight brown streak. I have shown the base of the asci but again not sure whether it shows a crozier.

Thanks again.

Mal
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Hans-Otto Baral, 02-10-2018 07:34
Hans-Otto Baral
Re : Stalked yellowy cup
Are your pics in Congo red or in another red stain?

Nothing is alive anymore there. But one image shows a splendid crozier. The third pic looks much like a simple-septate ascus, though, maybe only because the other septum is hidden?

When testing iodine, the surrounding, especially the cytoplasm, should take a yellow-brownish colour, otherwise I would say there isn't enough iodine to provoke a reaction.
Zotto