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28-07-2025 04:59

Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

28-07-2025 12:34

Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 16:34

Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

24-07-2025 19:02

Castillo Joseba Castillo Joseba

De esta mañana en tronco caido de Haya A ver si

21-07-2025 19:22

Ethan Crenson

Hello all,  Here is an Orbilia found by a friend

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

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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:
https://doi.org/10.1007/s13225-016-0356-y
https://doi.org/10.1007/s11557-018-1435-0
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5788271/

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.

Best,
Hermann

Jennifer Fiorentino, 05-12-2021 16:02
Re : A non-lichenised fungus?
A belated thanks for your comment. Will check my specimen in line with your suggestion. So sorry to have missed it way back in July. My apologies.