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13-04-2023 11:29
![Marc Detollenaere](/uploads/user_vgn/Detollenaere-0001.jpg)
Dear Forum,On a dead branch of Sambucus I found so
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12-04-2023 20:56
Shane JohnDoes anyone have a copy of Mycotaxon 19. 1984. Ono
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12-04-2023 07:35
Henri KoskinenHi all. Here is a Ciboria I collected 09.04 in Fin
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12-04-2023 15:39
Margot en Geert VullingsWe found these black fruit bodies on (most likely)
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10-04-2023 22:43
David MitchelA couple of us have been finding this fungus on de
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02-04-2023 18:49
Margot en Geert VullingsWe found this 3mm brown asco with thick stem April
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09-04-2023 19:52
Margot en Geert VullingsOn a fallen branch (of which it is no longer possi
Trichopezizella rubroguttata with intrahymenial Helicogonium
Marc Detollenaere,
13-04-2023 11:29
![Marc Detollenaere](/uploads/user_vgn/Detollenaere-0001.jpg)
On a dead branch of Sambucus I found some small white discs of 1.4mm diameter with at first sight white hairs. With the microscope the hairs were brown, thickwalled and septate and measured 90-100µ.Tips were finely incrusted.Paraphyse were of 2 types, lanceolate and filiform. Ascospores were slightly curved 13.5x2.5µ and became 1-septate. There were also a lot of conidiospores with tail (20-28x2.7) from Helicogonium sp. Asci measured 78x6µ. Some croziers were seen. IKI bb.
Could the the ascospores belong to the Helicogonium?
Is it possible to identify the Helicogonium with these findings?
Many thanks
Marc
Hans-Otto Baral,
13-04-2023 16:19
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Trichopezizella rubroguttata with intrahymenial Helicogonium
Is this a woody Sambucus ? Because T. rubroguttata I remember only from herbs.
What you consider conidia are the germinating ascospores.
Marc Detollenaere,
13-04-2023 18:11
![Marc Detollenaere](/uploads/user_vgn/Detollenaere-0001.jpg)
Re : Trichopezizella rubroguttata with intrahymenial Helicogonium
Hi Zotto,
It was indeed on a woody branch of Sambucus nigra.
If the long-tailed spores are only germinating spores, we don't have a intrahymenial parasite here?
It was indeed on a woody branch of Sambucus nigra.
If the long-tailed spores are only germinating spores, we don't have a intrahymenial parasite here?
Hans-Otto Baral,
13-04-2023 18:23
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Trichopezizella rubroguttata with intrahymenial Helicogonium
Indeed, I see no indication for a parasite. But the substrate remains strange. Also there exist finds with or without croziers in this species. - Stop, I think it is not a Trichopezizella because the hairs are somewhat flexuous and not capitate and densely septate above. A Lasiobelonium is more probable.
Marc Detollenaere,
13-04-2023 22:09
![Marc Detollenaere](/uploads/user_vgn/Detollenaere-0001.jpg)
Re : Trichopezizella rubroguttata with intrahymenial Helicogonium
You are right.Lasiobelonium variegatum is a match
Thanks Zotto
Thanks Zotto