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11-03-2026 17:36

Help for Genus and Species ID
Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 19:44

Ostropoloid fungus on Hibiscus
Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 15:45

Dematioscypha cf. olivacea
Åge Oterhals

Dear forum,I found this small discomycete on a ver

12-03-2026 16:17

Mollisia atlantica
Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

12-03-2026 14:37

Octospora
David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Saccobolus minimoides ?
Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

09-02-2026 22:01

Sp
ruiz Jose

Hola, me paso esta colección en madera de pino, t

11-03-2026 14:14

Scopinella on Dryas octopetala
Gernot Friebes

Hi,I would like to share a collection of Scopinell

15-09-2020 17:27

Thyridaria sp.
Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte décortiquée de Berbe

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Blue stone lichen id ?
Cvenkel Miran, 28-03-2015 22:50
Attached image - sorry ascofrance automaticaly downsizes uplodaed image, otherwise it was full size.. As you see fruiting bodies appears on stone with 'no background thalus coloration' or background coloration is not that obvious.. But look at top left side  - bluish color on stone.

The combination of bluish thalus & fruiting bodies: photo All from same location, same date, Slovenia.


  • message #34791
Lepista Zacarias, 28-03-2015 23:13
Re : Blue stone lichen id ?
Here I (only) suspect that this could be a Caloplaca, like C. albopruinosa, which has an endolithic thallus and blue pruinose apothecia with white margins; There are some other Caloplaca with somewhat similar apothecia, but the thallus is not endolithic, like C. chalybaea and C. variabilis.
Hope this can help,
zaca
Cvenkel Miran, 29-03-2015 00:06
Re : Blue stone lichen id ?
Thanks. Seems right. Depending on angle of lightting the apothecia color can seem to be black instead of blue. Sample: http://dbiodbs.univ.trieste.it/italic/italic42?specie=275&us=admin