Helotiales on Betula leaf - Forum ASCOFrance

27-04-2026 20:52

Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

27-04-2026 18:48

Micropodia pteridina?

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 17:41

another anamorph on monocotyleous remains from Portugal

Lothar Krieglsteiner

.. Algarve, same leaf than the last post. The con

27-04-2026 18:05

bright green minute anamorph on Citrus aurantius-twig from Portugal

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27-04-2026 17:16

anamorph on monocotyleous leaves from Portugal

Lothar Krieglsteiner

.. Algarve, moist lying.The conidiomata look like

27-04-2026 12:54

Spiral conidial crust

Steve Clements

Bonjour. Ce petit champignon blanc résupiné et

27-04-2026 09:59

Microdiplodia henningsii

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Bonjour Can anyone advise me on these pycnidia fo

26-04-2026 21:08

Ramularia sp ?

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22-04-2026 20:54

Pyrenopeziza on monocot.

Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

lachnum pudicellum

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Bonjour forumdans la clé de Zotto, L. pudicellum

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Helotiales on Betula leaf

Juuso Äikäs, 03-11-2024 07:27

This tiny (0.2 mm wide) brown cup fungus was growing on a decaying Betula leaf.

Asci 8-spored, IKI+(b). The asci have prominent basal protuberances, but seem to lack proper croziers.

There were some cylindrical cells without contents that might be paraphyses or marginal cells.

The excipulum seems to be of textura porrecta.

Spores:

9.6 - 11.89 (11.9) × (2.5) 2.53 - 3.28 (3.3) µm
Q = 3 - 4.1 ; N = 5
Me = 10.2 × 2.8 µm ; Qe = 3.6

Hans-Otto Baral, 03-11-2024 07:50

Re : Helotiales on Betula leaf

I imagined Hyaloscypha fuscostipitata but that has definitely smaller spores and particularly strongly tapering hairs, also a dark base. And you are right: the ascus protuberance does not fuse. What seems to be paraphyses is not clearly alive, are you sure that the fungus has no VBs?

Juuso Äikäs, 03-11-2024 08:38

Re : Helotiales on Betula leaf

Thanks, I'm not entirely sure about VBs -- maybe the fruitbody wasn't in the best condition. Wish I had some extra material. There was some brown pigment on the outside, maybe from crushed cells?

Hans-Otto Baral, 03-11-2024 08:56

Re : Helotiales on Betula leaf

There are globose bodies with that colour which could point to multiguttulate VBs, but not sure.

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