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15-01-2026 10:35

Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

15-01-2026 10:34

Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

15-01-2026 10:34

Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

13-01-2026 07:28

Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

13-01-2026 08:43

Danny Newman Danny Newman

Tricladium varicosporioides on indet. decorticate

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

13-01-2026 09:10

Danny Newman Danny Newman

Dasyscyphella chrysotexta on indet. decorticate ha

13-01-2026 10:13

Danny Newman Danny Newman

Cordieritidaceae sp. on indet. wood w/ Hypoxylon s

13-01-2026 07:14

Danny Newman Danny Newman

Neodasyscypha cerina on indet decorticate logThe S

15-01-2026 10:02

Danny Newman Danny Newman

Coccomyces sp. on fallen Rhododendron leavesPretty

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Orange ostioles on Populus tremula bark
Gernot Friebes, 14-02-2025 12:57
Hello,

we are looking for ideas regarding this pyrenomycetoid fungus with orange to red ostioles, collected on bark of Populus tremula. It is very distinctive, so I hope that someone might recognise it.

Thank you and best wishes,
Gernot
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Ethan Crenson, 14-02-2025 15:50
Re : Orange ostioles on Populus tremula bark
It looks quite a bit like Byssosphaeria.  Could be Byssosphaeria rhodomphala that has seen better days.  Or something similar.
Gernot Friebes, 14-02-2025 16:17
Re : Orange ostioles on Populus tremula bark
Thank you for your suggestion, Ethan. Byssosphaeria was my first thought, but I don't know any species that fits well. Byssosphaeria rhodomphala is described with brown ascospores, in this specimen they are hyaline.

Best wishes,
Gernot