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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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lichenicolous fungi on Variospora thallincola
Niek Schrier, 20-06-2023 18:44
hi everyone,

I found a lichenicolous fungi growing on Variospora thallincola. Host (and lichenicolous fungi) are growing on the granite stones of a leeve (dyke) on the Wadden Sea side of Texel (Dutch island), 1 meter above tide line. My thought and suggestions from researchers were going in the direction of Sclerococcum, Trimmatostroma and Cladophialophora. However, I cannot find any species known to infect this host, nor one that looks like the specimen I found.


Description (so far): A black mass growing mainly on the host thallus, somethimes covering apothecial discs. So far, fruiting body structures are not recognized. On the host surface, the fungus produces 2- to multi-celled conidia. Conidial cells are dark, smooth-walled, subspherical to ellipsoid, measuring 5.8 - 7.9 x 4.7 - 5.3 um, Q 1.14 - 1.63.


Does anyone have any suggestions what this could be? Thanks in advance!


Kind regards,
Niek Schrier

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Guy Marson, 20-06-2023 19:02
Re : lichenicolous fungi on Variospora thallincola
Hi Niek, 

Your really good pictures, together with enough morphology, should be enough to email your questions to Paul Diederich (paul.diederich@education.lu), who probably knows this species.

Best wishes,

Guy
Paul Cannon, 21-06-2023 13:25
Re : lichenicolous fungi on Variospora thallincola
This looks like Monodictys fuliginosa (not a specialized lichenicolous species) that I've seen on Xanthoria parietina. See info here - https://fungi.myspecies.info/all-fungi/monodictys-fuliginosa

Best wishes

Paul
Alain GARDIENNET, 24-06-2023 09:21
Alain GARDIENNET
Re : lichenicolous fungi on Variospora thallincola
Yes, good idea to contact Paul, who is currently writing his Flora Lichenicolous Fungi II devoted to lichenicolous hyphomycetes. Either he confirms Monodictys fuliginosa and it will take him a few seconds, or he will ask to study this collection. It's not always easy to identify such fungi.
Alain
Niek Schrier, 30-06-2023 10:26
Re : lichenicolous fungi on Variospora thallincola
Thank tou for the suggestions and tips Paul, Guy and Alain! I emailed Paul Diederich and he has indentified this sample as colonies of the cyanobacterium Gloeocapsa sp.