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26-08-2025 16:34

On Robinia!
Marcel Heyligen Marcel Heyligen

Out of curiosity, because it's just so beautiful!

25-08-2025 17:37

Petit asco indéterminé
François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

24-08-2025 21:30

Orbilia dryadum ?
Ethan Crenson

Found yesterday in a New Jersey park.  An Orbilia

24-08-2025 21:59

Podospora
Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

21-08-2025 18:09

Semble Thecotheus
Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

22-08-2025 18:10

Protocrea ?
Ethan Crenson

Hello everyone,  I found what I think might be P

20-08-2025 19:04

Adelphella babingtonii - lacking much brown pigment
Ethan Crenson

Hello, This asco was found on the same wood as my

22-08-2025 08:41

Literature request
Masanori Kutsuna

Hello.Can anyone help me to get this article?Liu H

21-08-2025 02:18

Helicoma muelleri?
Stefan Jakobsson

On a necrotic section of a living Tilia cordata I

18-08-2025 23:15

S.vitreola?
Zoe Vélez Zoe Vélez

Hola foro, gracias por aceptar la creación de mi

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Yellow Discomycete on Soil
Charles Aron, 13-10-2020 18:26
Charles Aron

Hi All,


For a couple of months I have been finding yellow apothecia on bare damp soil in shrub borders of my garden. They are 1-3mm and bowl to disc shaped. The spores are usually multiguttulate and measure 15-21x9-10 and the cylindric asci are 200-280x10-13. No blueing in iodine was observed. Did not find croziers. The paraphyses are curved, septate and slightly swollen to 3 at the apex. A distinctive feature is that the paraphyses and ascus tips are glued together with yellowish amorphous matter. In Melzer's this disperses into yellow drops. Excipulum is a Textura Globosa. I think we are looking at an operculate disco but am struggling even to get to genus.


Thanks in advance,


Charles.

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Chris Yeates, 13-10-2020 20:46
Chris Yeates
Re : Yellow Discomycete on Soil
Hello Charles

My first thought was something like Cheilymenia vitellina - any inconspicuous marginal hairs?

Best

Chris
Lothar Krieglsteiner, 13-10-2020 20:49
Lothar Krieglsteiner
Re : Yellow Discomycete on Soil
Hello Chris,
Cheilymenia I know without conspicuous contents of the spores (?).
Best regards, Lothar
Charles Aron, 13-10-2020 21:21
Charles Aron
Re : Yellow Discomycete on Soil

Hi Chris,


Not aware any hairs. Also a bit small for C. vitellina


Cheers,


Charles.

Charles Aron, 13-10-2020 21:32
Charles Aron
Re : Yellow Discomycete on Soil

Here is a slightly better photo of the apothecia, this time with sparse mosses, but in other spots there was no moss at all.


Charles.


I have received the suggestion of Boubovia/Pseudoboubovia from Marcel Vegas. I think I had ruled out Boubovia but I was unaware of Pseudoboubovia. It turns out that Pseudoboubovia benkertii, with its multiguttulate ascospores, is an excellent fit!

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Chris Yeates, 13-10-2020 22:44
Chris Yeates
Re : Yellow Discomycete on Soil
Nice!

New to UK? New genus for UK? I suspect the national fungaria will be interested . . .

It just goes to show what is out there; I tend to collect in less than "prime" habitat and still find interesting things (albeit generally quite small things ;-) )
Charles Aron, 13-10-2020 23:18
Charles Aron
Re : Yellow Discomycete on Soil

Hi Chris,


Wel, I always scan the soil surface when I'm gardening. Just in case! It turns out that this fungus is associated with my Cupressus hedge!


Yes, I think the genus might be new to Britain and I'll let Paul Cannon know.


Best wishes,


Charles.