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17-07-2024 22:37

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Peter Welt Peter Welt

Who can help? Arx, J.A. von. 1973. Ostiolate and

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Bryophilous disco on Liochlaena
Andgelo Mombert Andgelo Mombert

Bonsoir, Un discomycète sur Liochlaena lanceolat

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Unknown on snail
Andgelo Mombert Andgelo Mombert

Hello,A colleague found an unknown fungus on the s

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Le Gal M (1959)
Hans-Otto Baral Hans-Otto Baral

I have a question about the scaling of illustratio

17-07-2024 08:35

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Peter Welt Peter Welt

Who can help? Malloch, D.; Hubart, J.-M. 1987. An

17-07-2024 11:33

literature request
Angel Pintos Angel Pintos

Hello, anybody body has:Pande A. and Rao, V.G. (1

11-01-2022 16:36

Literature request: Raitviir (2004) Revised synopsis of Hyaloscyphaceae?
Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

24-08-2020 13:00

Literature request: von Arx 1973
Yulia Lytvynenko Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

11-07-2024 14:29

Mollisia cf caricina
Viktorie Halasu Viktorie Halasu

Hello, a thin-fleshed Mollisia on a monocot stem

15-07-2024 10:38

Ascobolus
Joaquin Martin

Hi, I found this Ascobolus in company of Cheilyme

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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.

  • message #77363
  • 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: