Asco on branch - Forum ASCOFrance

14-07-2025 11:20

Une hélotiale sur Sphagnum palustre

Michel Hairaud

Bonjour, Voici une espèce de (?) Hyaloscyphace

16-07-2025 17:34

Sphaerulina cornicola versus Septoria cornina

Bernard Declercq

Hello,I have trouble distinguishing above mention

15-07-2025 13:27

literature request

Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Troposporella fumosum => Troposporella monilipes

Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Hypoxylon cf ticinense

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Jackrogersella minutella VS Hypoxylon cohaerens var. microsporum

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Olla aff. millepunctata (croziers +) on Rubus idaeus

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Rutstroemia ulmariae(?) on Saxifraga rotundifolia

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Nectria

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Sur écorce de Hêtre

Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

Asco on branch

Thorben Hülsewig, 19-05-2018 23:46

Hi there,

today i found this asco on a branch (Fagus sylvatica).
The spores are 3 Micrometer in diameter.
What could that be ?

best regards,
Thorben

Stip Helleman, 20-05-2018 01:07

Re : Asco on branch

Hi THorben,
the most likely option is Hyphodiscus theioideus.

Herzlich,
Stip

Hans-Otto Baral, 20-05-2018 08:24

Re : Asco on branch

I have the same idea, and I would like to know the marginal hairs as well as the Lugol reaction of the ascus apex. H. theiodeus is fungicolous, it always grows on corticioid basidios like Peniophora.

Thorben Hülsewig, 20-05-2018 12:54

Re : Asco on branch

Hi there,

that is it :)
I see also a corticioid basidio, but i didn't bother with him anymore.
Here are the marginal hair and lugol reaction pcitures.

best regards,
Thorben

Thorben Hülsewig, 21-05-2018 11:45

Re : Asco on branch

Is it normal that the lugol reaction is so various ?

Hans-Otto Baral, 21-05-2018 13:49

Re : Asco on branch

Yes, very good photo of the hairs.

The colour of the apical ring reaction simply depends on the IKI concentration (blue when low, red when high). This is type RB of hemiamyliodity.

Accès membres

Forum AscoFrance