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23-12-2025 11:27

blanc poilu
Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Small resin asco?
Mirek Gryc

Hi. „I doubt it is possible to identify this ti

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

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Aquatic, hyaline-milky superficial unitunicate pyreno with muriform spores - Denmark VI 2019
Thomas Læssøe, 03-06-2019 17:21
Ascospores 23,8-24,5 x 7,5-7,8 µm, hyaline, muriform with 5 transverse septa and one longitudinal, fusiform. Asci 8-spored, obliquely uniseriate, with crozier, unitunicate with small ring-like ap. apparatus. Paraphyses broadlhy filiform, septate.
Perithecia milky-white with delimited papillate-rounded ostiole. Like an albino-Cosmospora. Solitary or in small clusters among Jahnula a. KOH inert.Lugol inert.


https://svampe.databasen.org/observations/10015167
Jacques Fournier, 03-06-2019 18:33
Jacques Fournier
Re : Aquatic, hyaline-milky superficial unitunicate pyreno with muriform spores - Denmark VI 2019
Hi Thomas,

welcome in water!

I think I know this fungus that I collected fairly often in my region, always forming small inconspicuous colonies. Ascomata are about 200µm diam. I did not notice the longitudinal septum but the guttulate content may make it difficult to see.

All attempts to grow it in culture failed, thus it remained unnamed, likely an undescribed genus.

Similar minute whitish ascomata with different ascospores may also occur, microscopy is thus required. None of those that I collected got a name...

Cheers,

Jacques
Thomas Læssøe, 03-06-2019 21:03
Re : Aquatic, hyaline-milky superficial unitunicate pyreno with muriform spores - Denmark VI 2019
Thanks Jacques. I cannot say I directly observed a longitudinal septum but rather guessed its presence based on the guttulation. The material is rather rich but I am not surprised it remains unnamed.

All the best
Thomas
Martin Bemmann, 03-06-2019 22:05
Martin Bemmann
Re : Aquatic, hyaline-milky superficial unitunicate pyreno with muriform spores - Denmark VI 2019
Hi Thomas,

did you check congophily? Just to have another +-feature.

regards

Martin
Thomas Læssøe, 03-06-2019 22:50
Re : Aquatic, hyaline-milky superficial unitunicate pyreno with muriform spores - Denmark VI 2019
nope but maybe possible tomorrow :-)