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23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Spherical Pyrenomycete
Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Phylloscypha labessiana ?
Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Nectria ??
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Phylloscypha boltonii
Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:40

recherche de références biblio
Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

20-12-2025 23:08

Malvipezia pauli !
Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

21-12-2025 01:54

Ophiostoma
David Chapados David Chapados

Hi,Would it be possible to find the species with t

20-12-2025 15:47

Greenish asco on pine?
Mirek Gryc

Hi.These grew on pine wood that was heavily covere

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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.