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23-05-2026 11:44

Coprophilous pyrenomycete wild boar dung
Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

25-05-2026 16:44

Ascomata under epidermis Carex
François Bartholomeeusen

Hi forum members,During an excursion organised by

25-05-2026 16:35

Anamorphe d'Hypomyces aurantius ? sous saule cendré (Salix cinerea)
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

22-05-2026 13:29

Pseudophacidium ?necans on Vaccinium myrtillus
Gernot Friebes

Hi,I am curious to hear your opinion on this mater

23-05-2026 18:57

Mollisia scopiformis
Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

23-05-2026 23:53

cf Godronia sp.
Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

22-05-2026 14:44

minute Saccobolus from cow-dung (moist chamber from Portugal)
Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

22-05-2026 21:35

A yellow synnemata (coremia) on wood
Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

similar to Karstenia but iodine-negative - on Osmunda in moist chamber
Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

tiny gray asco on Pinus strobus / moss
Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

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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: