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03-03-2026 20:34

Cercophora-Podospora-Arnium 210226 333 on cow dung
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningThese small, amphora-shaped perithecia

28-02-2026 11:54

Sinensia
Alain GARDIENNET Alain GARDIENNET

Hi forum,Is anyone aware if the 1936 edition of Si

02-03-2026 22:07

Geopyxis majalis ?
Jorge Hernanz

Buenas noches!Entre musgos, bajo Pinus halepensis

01-03-2026 18:02

unidentified Helotiales on a leaf
Francois Guay Francois Guay

I found this mystery Helotiales on an incubated le

28-02-2026 14:43

Georgian litterature
Alain GARDIENNET Alain GARDIENNET

A new refrence desired :Svanidze, T.V. (1984) Novy

01-03-2026 18:46

Lichenicolous myxomycete on Lopadium
Robin Isaksson Robin Isaksson

Hi! This species i se from time to time in the

26-02-2026 22:06

Geoscypha
Malcolm Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

27-02-2026 17:51

Parasite de Evernia prunastri
Michel Hairaud Michel Hairaud

Bonjour, Quelqu'un peut il me donner un conseil p

27-02-2026 16:17

Sydowiella or Melanconis teleomorph on Betula
Mathias Hass Mathias Hass

Hi, Found this on Betula, rather fresh fallen twi

01-03-2026 14:10

Peziza varia complex?
Antonio Couceiro Antonio Couceiro

Hola, me gustaria conocer opiniones sobre este tem

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Pale Hymenoscyphus on leaf
Juuso Äikäs, 26-10-2025 21:23
Hello,

a couple weeks ago I found some pale, whitish Hymenosyphus fruitbodies growing on a decaying leaf (probably of Acer platanoides).

Asci 8-spored, IKI+(b), croziers+.


Paraphyses narrowly cylindrical, filled with rather low-refracting VBs (maybe not in the best condition?). Ectal excipulum of textura prismatica.


Spores 10.8 - 12.1 × 4.2 - 4.8 µm, Q = 2.3 - 2.8; avg = 11.4 × 4.4 µm, Qav = 2.6; n = 10.


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Any ideas about the species?


The photos are to be found found here:


https://www.inaturalist.org/observations/321004690

Hans-Otto Baral, 26-10-2025 22:07
Hans-Otto Baral
Re : Pale Hymenoscyphus on leaf
Are the apos big? My guess would be H. immutabilis, a species resembling H. imberbis.
Juuso Äikäs, 26-10-2025 22:16
Re : Pale Hymenoscyphus on leaf
The apos were something like 2-3 mm wide. There are many findings of it on iNaturalist by Igor Khomenko that appear to match quite well. So, I think this is the solution. Thanks!