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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

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

14-07-2025 11:19

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

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

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Hysterioid on Pinus bark
Juuso Äikäs, 14-03-2022 14:02
Yesterday I found some hysterioid fungi growing on bark of a dead, standing Pinus sylvestris tree.

The fruitbodies aren't in the best condition and must've developed last season. But there were spores to be found and some asci as well.

The spores have one septum and measure 27.8 - 32.7 × 8.8 - 9.5 µm. 

Actidium baccarinii is the best match I found, but it's spores shouldn't be nearly as big as these are. Maybe the large size is because of germination? Or is there some other alternative?
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  • message #72070
  • message #72070
Adam Polhorský, 14-03-2022 17:08
Re : Hysterioid on Pinus bark
Hi Juuso, I dont have a name for you but I think it is the same as http://ascofrance.com/search_forum/65795 and http://ascofrance.com/search_forum/41100
Björn Nordén, 14-03-2022 17:41
Re : Hysterioid on Pinus bark
Please check Poetschia buellioides
Juuso Äikäs, 14-03-2022 18:59
Re : Hysterioid on Pinus bark
Thanks a lot for the answers and links! 

That seems to be the right direction -- so this actually belongs to Patellariaceae.

I found a description of Poetschia buellioides (A reassessment of the genera referred to the family Patellariaceae (Ascomycota)), but it mentioned that that one grows on deciduous wood; although there appear to be sightings of it in GBIF from Pinus. Otherwise it seems to fit pretty well.
Björn Nordén, 14-03-2022 19:15
Re : Hysterioid on Pinus bark
Yes, it is common on Pinus bark.

Best regards

Björn
Juuso Äikäs, 14-03-2022 20:18
Re : Hysterioid on Pinus bark
Ok, good to know! This species and even the genus seems to be missing from the Finnish species list. Probably once again one of these common but rarely-if-ever reported cases.
Björn Nordén, 14-03-2022 20:57
Re : Hysterioid on Pinus bark
I have made a key to hysterioids in Fennoscandia in case you are interested.
Best
Juuso Äikäs, 14-03-2022 21:07
Re : Hysterioid on Pinus bark
Ah yes! I actually downloaded that last week from researchgate:

https://www.researchgate.net/publication/351561550_Key_to_hysterioid_fungi_on_bark_and_wood_in_Scandinavia

A very nice key. Somehow I just managed to miss this one...