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09-06-2026 18:32

Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

10-06-2026 13:41

François Freléchoux François Freléchoux

Bonjour à nouveau, Voici une trouvaille d'hier.

10-06-2026 11:53

Steve Clements

Bonjour, This disco is abundant on dead stems of

10-06-2026 12:54

Steve Clements

Bonjour encore, Pouvez-vous m'aider, s'il vous pl

10-06-2026 10:45

François Freléchoux François Freléchoux

Bonjour à nouveau, Encore une détermination qui

08-06-2026 10:16

Spooren Marco Spooren Marco

I don`t have a clou about this fungus,it is not in

10-06-2026 09:24

François Freléchoux François Freléchoux

Bonjour, J'imagine que cette détermination ne do

08-06-2026 17:00

François Bartholomeeusen

Good day everyone, On June 5 2026, I collected de

07-06-2026 18:18

Mario Schulz

Hello everyone, i found on 31.5 the following Mol

07-06-2026 15:10

William Slosse William Slosse

Hello everyone,On 05-06-26, I found following asco

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Hymenoscyphys on Typha
Juuso Äikäs, 19-09-2022 07:40
These rather small (up to 0.8 mm) beige Hymenoscyphus fruitbodies were growing on a dead Typha stem at the shore of a pond.

Croziers present, IKI+, paraphyses full of tiny VBs. Spores naviculiform, measuring 18.7 - 19.7 × 4.2 - 5 µm.

Any idea what the species is?
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Hans-Otto Baral, 19-09-2022 09:39
Hans-Otto Baral
Re : Hymenoscyphys on Typha
Although there is no doubt I would appreciate a photo of an immature dead ascus in IKI to see the Hymenoscyphus-type of ring. The excipulum is probably of prismatic cells?

The spores appear to be almost non-scutuloid. My guess is Hymenoscyphus macroguttatus.

Torsten Richter has a Hymenoscyphus typhae nom. prov. but that has short stalks and wider spores with often 1-2 septa inside the living asci. It is in the varicosporoides folder of Cudoniella (HB 10115). Excipulum alsmost globose, so a totally different species.
Juuso Äikäs, 19-09-2022 11:56
Re : Hymenoscyphys on Typha
Thanks again! I checked your H. macroguttatus folder, and that seems to fit pretty well. Yeah, these stalks are fairly long and there were no septas in the spores, but it's good to be aware of that H. typhae species. The excipulum seems to be of textura prismatica.
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Hans-Otto Baral, 19-09-2022 12:47
Hans-Otto Baral
Re : Hymenoscyphys on Typha
The ring looks a bit thick, anyway I have little doubt. Yes, prismatic.