25-11-2025 14:24
Thomas Læssøehttps://svampe.databasen.org/observations/10490522
25-11-2025 11:03
Mick PeerdemanHi all,One of my earliest microscopy attempts, so
24-11-2025 15:23
Arnold BüschlenHallo, auf einer offenen Kiesfläche am Rande ein
23-11-2025 11:16
Bohan JiaHi, I found small discs growing on dead stem of
21-11-2025 10:56
Christopher Engelhardt
Very small (~0,5 mm) white ascos, found yesterday
Sphaeropsis sapinea / Pinus nigra ?
Aouali Souhila,
08-06-2021 18:16
I lately studied P. nigra pine needles suffering blight symptoms. Could this be Sphaeropsis sapinea? based on literature the conidia are not septate, however in some literature cases of one septate conidia are present too. Another possibility that I came throu is Phoma acicola? No measurings taken yet.
Thank you.
Souhila
Chris Yeates,
08-06-2021 23:35
Re : Sphaeropsis sapinea / Pinus nigra ?
Hi
Usually 0-1 septate, but can be more in older conidia see image below (not a great photo, from some years ago, but shows the septa OK). I think you are correct if the measurements fit - a Phoma would have much smaller non-septate, colourless conidia.
Regards, Chris
Aouali Souhila,
10-06-2021 14:20
Re : Sphaeropsis sapinea / Pinus nigra ?
Hi,
Thank you Chris. I'll do measurements and compare.
Best regards, Souhila.
Thank you Chris. I'll do measurements and compare.
Best regards, Souhila.