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15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

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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?
  • message #72070
  • 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...