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10-10-2025 00:49

Amicodisca svrcekii ?
Ethan Crenson

Hello all, This was found last weekend on a hardw

09-10-2025 22:14

Hymenoscphyus or Bryoscyphus? Yellow cup / white stipe
S. Rebecca

We just had the Bavarian Mycology Conference in Au

06-10-2025 15:57

Lophiostoma
David Chapados David Chapados

Hi, Could anyone help me with this Lophiostoma? 

04-10-2025 02:13

Hymenoscyphus with a reddish stipe
Francois Guay Francois Guay

Hi everyone,   I found this Hymenoscyphus growi

03-10-2025 22:17

White asco on Fagus grandifolia leaf
Francois Guay Francois Guay

Hi everyone,   I found this white, star-shaped

03-10-2025 22:03

Unknown asco found in a root hole
Francois Guay Francois Guay

Hi everyone, I found this weird asco growing on wo

03-10-2025 13:44

Unknown on Populus -> Pyxidiophora species
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Populus

05-10-2025 16:41

Could this be Bacidina chloroticula in a mat of algae/lichens?
François Bartholomeeusen

Dear forum members, On a mat of dried algae/liche

04-10-2025 02:17

small disco
Masanori Kutsuna

Hello, This is a quite common species on rotten w

03-10-2025 10:25

chaetomium sp sur crotte lapin
Jean-Luc Ranger

Que pensez-vous de ce Chaetomium sp : 10- 10,5 x 6

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Hymenoscphyus or Bryoscyphus? Yellow cup / white stipe
S. Rebecca, 09-10-2025 22:14
We just had the Bavarian Mycology Conference in Augsburg and my friend gave these ascos to me.

I try, but I am just not getting anywhere.


They were found in a field of unimproved grassland with Juniperus, and alongside the field were Fagus, Quercus, Crataegus, Pinus, Picea.


These Ascos looked like they were on an exposed root but under the bino they looked attached to Plagiomnium affina (ID google).


Largest Ascocarp ca 5-6 mm x 7 mm. Seems to be too large for Bryoscyphus.


Ascoporus blue in IKI.
Asci length 70 - 93 µm measured, p = 15
Spores 12-15 x 2.5 -3.5 (4) µm.
No Croziers observed
Does not redden.


Are the pictures enough to determine the genus?
Any chance at the species?

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Hans-Otto Baral, 09-10-2025 22:35
Hans-Otto Baral
Re : Hymenoscphyus or Bryoscyphus? Yellow cup / white stipe
Hi

I have no clear idea based on your pics. The iodine reaction should be in the apical thickening, not at the apex. Not sure what that is. The reagent colour does not look like iodine?

The paraphyses are not clearly seen. Do they contain guttules?

The spores look eguttulate.

The ascus base I cannot see.

Is it possible that the stipe base sits on rotten wood?

The ectal excipulum is probably t. prismatica?

Zotto
DirkW, 09-10-2025 23:40
DirkW
Re : Hymenoscphyus or Bryoscyphus? Yellow cup / white stipe
Hi Rebecca and Zotto, whats about Hymenoscyphus repandus here? Sure, the images are not very specific. But at least spore shape and measures and morphology of apothezia would fit ...
All best
Dirk