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17-07-2025 11:55

Una para ID 833
Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Sphaerulina cornicola versus Septoria cornina
Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

14-07-2025 11:20

Une hélotiale sur Sphagnum palustre
Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

15-07-2025 13:27

literature request
Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Troposporella fumosum => Troposporella monilipes
Riet van Oosten 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

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Black with a mycelium.
Per Marstad, 27-02-2019 11:16
Per MarstadI have found this in Norway, on Fraxinus excelsior, growing on a bed of mycelium.
Spores 27-28 x 6-8 my, with 3 segments.
I would like to have a name.
Per.

  • message #56514
  • message #56514
Lothar Krieglsteiner, 27-02-2019 11:28
Lothar Krieglsteiner
Re : Black with a mycelium.

Hello Per,


macroscopically this looks much like Chaetosphaerella phaeostroma.


The single spore (is it an ascospore?) could fit, too (but are a bit short) - 3 septa, end cells hyaline.


Best regards, Lothar

Per Marstad, 27-02-2019 11:44
Per Marstad
Re : Black with a mycelium.
In the description in Fungi and Lichens of Great Britain and Ireland tha size of the ascospore is (22-) 31-36 x 6-9 my and the form is exactly like my picture, so your determination is right, I think. Thank you.
Per.