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21-03-2026 22:59

Hysteriaceae ??
Petr Soucek

Good evening, I would appreciate some advice on th

21-03-2026 15:13

MYXOMYCETICOLOUS FUNGI
Lepista Zacarias

Hello everyone, Does any one know of any literatu

20-03-2026 12:53

Eutypa spec. (?)
Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Hymenoscyphus ¿calycinoides?
Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Pseudomassaria-like on Cornus alba
Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Xylariaceae? on Carpinus betulus wood
Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

Myriosclerotinia curreyana?
William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

Lasiobelonium corticale ?
François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

"Lasiosphaerioid"
Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Massarina on Corylus
Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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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