06-12-2025 00:19
Viktorie Halasu
Hello, would anyone have this article, please? An
05-12-2025 17:33
Bruno Coué
Bonjour, je serais heureux de recueillir votre avi
02-12-2025 18:59
Malcolm Greaves
This pair of ascos 2.5cm across were on recently b
02-12-2025 19:25
Buckwheat PeteHello, can anyone identify this hairy fungus growi
30-11-2025 12:53
Edvin Johannesen
White short-stipitate apothecia found on thin twig
30-11-2025 10:47
William Slosse
I recently found a collection of small Peziza sp.
Pyrenopeziza on Alnus viridis
David Malloch,
22-05-2012 21:40
Dear Friends,This little discomycete appears every year on overwintered leaves of Alnus viridis near my home in New Brunswick. It looks a lot like the fungus Roland recently reported on Physocarpus opulifolius? except that it lacks verruculose hairs. It is similar in appearance to Pyrenopeziza fuckelii but the spores are too large. Any suggestions?
Dave
Hans-Otto Baral,
22-05-2012 21:54
Re : Pyrenopeziza on Alnus viridis
Dear Dave
my idea is that this is Pyrenopeziza betulina (Alb. & Schwein.) Rauschert? = Pyrenopeziza betulicola Fuckel.
This species has a complicated history, and it was even placed in Orbilia.
It is close to P. fuckelii = Microscypha monticola on Salix, but differs in longer spores. Ingo Wagner observed this difference in spore size also and made nice photos. I was so far only aware of finds on Betula, but it is no surprize to me that it also grows on Alnus.
Zotto
my idea is that this is Pyrenopeziza betulina (Alb. & Schwein.) Rauschert? = Pyrenopeziza betulicola Fuckel.
This species has a complicated history, and it was even placed in Orbilia.
It is close to P. fuckelii = Microscypha monticola on Salix, but differs in longer spores. Ingo Wagner observed this difference in spore size also and made nice photos. I was so far only aware of finds on Betula, but it is no surprize to me that it also grows on Alnus.
Zotto
David Malloch,
23-05-2012 00:01
Re : Pyrenopeziza on Alnus viridis
Dear Zotto,
Thank you for your informative and very prompt reply.
This fungus is VERY common here every spring and I am very pleased to have a name for it. Nothing is more annoying than being unable to identify a common fungus. I will check to see if this fungus is also on birch leaves.
Dave
Thank you for your informative and very prompt reply.
This fungus is VERY common here every spring and I am very pleased to have a name for it. Nothing is more annoying than being unable to identify a common fungus. I will check to see if this fungus is also on birch leaves.
Dave