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24-10-2021 21:50

asco on Andreaea rupestris
Robin Isaksson Robin Isaksson

Hi,Found on Andreaea rupestris sweden.ascomata bl

29-09-2022 17:25

Hymenoscyphus on Betula leaf
Juuso Äikäs

A finding from a couple days ago: a few white Hyme

29-09-2022 20:26

Geoglossum
Elisabeth Stöckli

Bonsoir, Trouvé à 2'500 m (prairie alpine), tai

29-09-2022 13:34

Tiny on Typha
Marja Pennanen

Dear colleagues, a couple of days ago I found the

13-12-2014 21:47

Disco negruzco
Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas imágenes de un disco neg

26-09-2022 15:31

Hypoderma rubi
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,please, can this be something else than Hypo

28-09-2022 22:03

Phyllocharis orbicularis
Roo Vandegrift Roo Vandegrift

Hello! I wanted to share a fascinating thing I saw

25-09-2022 20:04

Geoglossum
Elisabeth Stöckli

Bonsoir,Trouvé à 2'500 m (prairie alpin), taille

27-09-2022 19:06

Arnium cirriferum ?
Marie-Paule VIGNERON

Bonsoir. Sur crottin de cheval ramassé fin août

22-09-2022 18:14

Eutypella-like on Corylus
Andgelo Mombert Andgelo Mombert

Bonsoir, Ascomes sur branche morte attenante de C

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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.