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24-03-2026 21:37

Helminthosphaeria
Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

26-03-2026 12:50

Pseudombrophila
David Chapados David Chapados

Hi,I'm having a hard time figuring which Pseudombr

26-03-2026 11:17

asco in Ulmus
Vasileios Kaounas Vasileios Kaounas

Found 11-03-26, in leaf of Ulmus sp. Diameter 2-4

25-03-2026 22:23

Orbilia with resin deposits
Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

24-03-2026 15:44

Leptodontidium cf. trabinellum
Åge Oterhals

I hope someone can confirm the name of this collec

25-03-2026 20:53

Didymopsis helvellae on Helvella?
François Bartholomeeusen

Dear forum members,On 23 March 2026, I found sever

23-03-2026 20:16

Coprotus 210226 315
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

25-03-2026 15:06

Hyaloscypha albohyalina à confirmer
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

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Tiny white Helotiales
Nicolas VAN VOOREN, 26-10-2020 09:58
Nicolas VAN VOORENHi.
Here is the tiny white discomycete (~0.1 mm Ø) growing on dead branch of Salix (still attached), with Orbilia vinosa.
Asci 72-76 x 10 µm, without crozier, IKI-
Paraphyses filiform, 1.5-2 µm Ø, very flexuous.
Ascospores of heterogeneous shape, 10-15 x 3.5-4 µm

I have no idea of the genus...
Nicolas
  • message #65577
  • message #65577
  • message #65577
Stip Helleman, 27-10-2020 12:26
Stip Helleman
Re : Tiny white Helotiales
Hi Nicolas
Are you sure no hairs? They can be very inconspicuous in Hyaloscypha in my experience.
Cheers
Stip
Nicolas VAN VOOREN, 27-10-2020 12:47
Nicolas VAN VOOREN
Re : Tiny white Helotiales
I can try a new mount to check that.
Adam Polhorský, 27-10-2020 15:41
Re : Tiny white Helotiales
Hello,

Hyaloscypha minuta seems like good option. The hairs are not well developed there.
Nicolas VAN VOOREN, 27-10-2020 17:39
Nicolas VAN VOOREN
Re : Tiny white Helotiales
Here are two pictures of marginal cells (taken from the outside of an apothecium). No hairs or no hairs of Hyaloscypha-type.
  • message #65595
Stip Helleman, 27-10-2020 19:13
Stip Helleman
Re : Tiny white Helotiales
How disappointing, I would have bet on it.
With this lack of characters I have no idea for a genus.
Cheers, Stip
Hans-Otto Baral, 28-10-2020 06:40
Hans-Otto Baral
Re : Tiny white Helotiales
I agree with H. minuta (= Parorbiliopsis minuta). That species has very minute hairs or not at all any.

But I estimate the diameter of the apos at max. 0.5 mm.

Zotto
Nicolas VAN VOOREN, 28-10-2020 10:47
Nicolas VAN VOOREN
Re : Tiny white Helotiales
OK thanks.