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08-11-2025 00:29

Allophylaria subliciformis?
Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

06-11-2025 16:50

Hymenoscyphus sp?
Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

04-11-2025 14:53

Leptosphaeria?
Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

05-11-2025 11:33

Cladosporium ?
Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Hymenoscyphus on blueberry.
Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Protounguicularia transiens?
Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Tatraea sp. ? on Populus tremula
Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

Ascomycetes
David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Bright orange stalked asco
Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hymenoscyphus phiala
Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

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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 :-)