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06-12-2024 16:10

Mollisia ligni on Tamarix sp.
B Shelbourne B Shelbourne

• Macro and habitat appear mollisioid.• Mollis

19-11-2024 00:36

H. leucomelaena atípica
Pérez del Amo Carlos Manuel Pérez del Amo Carlos Manuel

Hace unos días encontramos numerosos ejemplares d

02-12-2024 19:02

Hairy black on Acer
Margot en Geert Vullings

On a fallen branch, probably Acer, we found these

05-12-2024 16:38

Melastiza carbonicola?
Karl Soler Kinnerbäck

A Melastiza from Padjelanta, alpine Sweden, on cal

06-12-2024 10:28

Interesting fungus from calcareous soil
Jiri Malicek

Hello, would anybody help me with ID of this unusu

05-12-2024 20:43

Pyreno with muriform spores
Juuso Äikäs

I found these black pyrenos a few days ago growing

05-12-2024 20:48

Xylariales
Stoykov Dimitar Stoykov Dimitar

Hallo colleagues,I need to consult a xylarialean c

30-11-2024 18:43

Ascomycète
Yanick BOULANGER

BonjourVoici une récolte du 31/10/2024 sur boisJe

05-12-2024 18:11

Longs poils orange
Yanick BOULANGER

Bonsoir Quelqu'un a t-il une idée de ce que c'es

04-12-2024 18:31

Jackrogersella?
David Chapados David Chapados

Would this be Jackrogersella or Hypoxylon?https://

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Minute white apos on Rubus idaeus
Stefan Jakobsson, 12-11-2023 16:54
On a dead stem of Rubus idaes I found a small group of apos, 200 µm diameter, no obvious hairs. The colour is white, turning light ochraceous when drying.

The spores are 26-33 x 1.4-2.1 µm. Sometimes (especially in CR) they seem to have three septa. The asci are not much longer than than the spores, 30-35 x 5.7-8.4 µm and somewhat thick-walled. The whole ascus turns blue in low concentrations of IKI and brown at higher concentrations. The ascus base is difficult to observe. The paraphyses are clavate, multiseptate, short-celled, sometimes branched.


I would be grateful for help with this one.

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  • message #77363
  • message #77363
  • message #77363
  • message #77363
Hans-Otto Baral, 12-11-2023 17:31
Hans-Otto Baral
Re : Minute white apos on Rubus idaeus
I think I saw this but cannot find. I thought in Vezdaea (in my folder Lecanorales) but I see no species with such spores.

Helicogonium conniventis has similar spores, and there is a H. paraconniventis folder with minute white apothecia, but all Helicogonium have inamyloid asci.
Stefan Jakobsson, 14-11-2023 15:10
Re : Minute white apos on Rubus idaeus
Thank you! That Vezdaea helped me to find Bacidina, which now has been confirmed by Stefan Ekman. He sais that it is Bacidina chloroticula.
Hans-Otto Baral, 14-11-2023 17:07
Hans-Otto Baral
Re : Minute white apos on Rubus idaeus
Ha! This was probably what I remembered. I have two species in my folder Bacidina (Ramalinaceae, Lecanorales), B. arnoldiana and B. delicata. Both are relatively similar to yours, and I am not able to tell the differences.
Stefan Jakobsson, 14-11-2023 18:11
Re : Minute white apos on Rubus idaeus
For anybody interested, here is a link to a paper on Scandinavian species: