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15-09-2021 12:41

Mirek Gryc

Hello allDear forum members, are my suspicions cor

16-09-2021 22:08

jean claude chasle

Bonsoir, Récolté en milieu humide sur brindille

15-09-2021 19:48

Andgelo Mombert Andgelo Mombert

Bonsoir, Sur branche morte d'Alnus alnobetula, en

16-09-2021 12:07

Castillo Joseba Castillo Joseba

De ayer en corteza de fagusA ver si hay alguna sug

15-09-2021 17:52

Ueli Graf Ueli Graf

The ostropalean fungi (Mycotaxon) 1977 von Martha

12-09-2021 12:18

Andgelo Mombert Andgelo Mombert

Bonjour, Sur tige morte d'Equisetum sp., vers 200

14-09-2021 19:26

Andgelo Mombert Andgelo Mombert

Bonsoir, Sur tiges mortes d'Epilobium angustifoli

14-09-2021 19:01

Juuso Äikäs

I found some small Lachnum-like fungi a couple day

09-09-2021 15:18

Maria Plekkenpol

Hello,On pieces of acorn cap buried in the ground

14-09-2021 19:41

Enrique Rubio Enrique Rubio

Could someone give me a copy of this item?Coniocha

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A non-lichenised fungus?
Jennifer Fiorentino, 28-07-2021 15:26
Would be very happy to receive your opinion on this. I examined the fruiting bodies of this fungus thinking it was a lichen as there seems to be a greyish white thallus present. It was growing on the bark of an old, coastal carob tree in the Mediterranean. The black fruiting bodies were between 0.1 - 0.3mm diameter. A TS revealed a hymenium of about 110um height and a dark hypothecium. The 3- septate spores were dark reddish-brown, 23-32 x 9 -16um. Too long and wide to fit any Diplotomma/Buellia Mediterranean lichen species I know of. Would this be a non-lichenised fungus? Many thanks in advance.
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Hermann Voglmayr, 30-07-2021 11:23
Hermann Voglmayr
Re : A non-lichenised fungus?
Dear Jennifer,
compare with Stigmatodiscus - see the following freely available publications:

I do not see any gel sheath surrounding the ascospores in your pics which are diagnostic for Stigmatodiscus - but this may be due to the fact that the ascospores illustrated are very old and dead, and probably also due to the slide preparation/mounting medium.

Concerning spore measurements and shape, this could be Stigmatodiscus oculatus, but one would need more clear pics of the ascomata, a thinner section of the ascomata and more detailed pictures of living ascospores to evaluate the gel sheath and septation.