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27-11-2020 11:34

DirkW DirkW

salut a tous,on dead stem of indet. herbaceous pla

27-11-2020 16:48

Andgelo Mombert Andgelo Mombert

Bonsoir, Je suis intéressé par de la documentat

26-11-2020 17:58

Gérard MELARD

Bonjour à chacune et à chacun,Je vous soumets un

26-11-2020 16:17

Blasco Rafael Blasco Rafael

Hola,  Alguno de Ustedes tiene documentación o a

27-11-2020 11:16

Joaquin Martin

Hi,I found this little ascomycete on rubus, I thin

24-11-2020 14:46

Thomas Læssøe

see: https://svampe.databasen.org/observations/101

11-02-2017 13:39

Nihad Omerovic

Hello,Loking for confirmation or opinions on this

26-11-2020 20:43

Marek Capoun Marek Capoun

Hello everybody, I need help with the determinatio

27-11-2020 07:51

Zuidland Peter

Can I get help with this small pyrenomycete please

27-11-2020 07:48

Zuidland Peter

Can I get help with this small pyrenomycete please

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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.