13-02-2026 03:30
Tomaz Vucko
Hello! I found these immersed perithecia on a stic
13-02-2026 18:05
Margot en Geert VullingsOn February 9, 2026, we found these small hairy di
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patrice CallardBonjour, la face inférieure des feuilles ce certa
11-02-2026 22:15
William Slosse
Today, February 11, 2026, we found the following R
12-02-2026 14:55
Thomas Læssøehttps://svampe.databasen.org/observations/10581810
11-02-2026 19:28
Lothar Krieglsteiner
on small deciduous twig on the ground in forest wi
25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by JÃ
10-02-2026 17:42
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me donner
Trichopezizella rubroguttata with intrahymenial Helicogonium
Marc Detollenaere,
13-04-2023 11:29
Dear Forum,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.Â
Could the the ascospores belong to the Helicogonium?Â
Is it possible to identify the Helicogonium with these findings?
Many thanks
Marc
Hans-Otto Baral,
13-04-2023 16:19
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
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
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
Re : Trichopezizella rubroguttata with intrahymenial Helicogonium
You are right.Lasiobelonium variegatum is a match
Thanks Zotto
Thanks Zotto