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24-10-2025 14:50

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Oct. 2025

24-10-2025 03:11

Francois Guay Francois Guay

I found this fungus growing on decaying conifer wo

23-10-2025 20:59

Patrice TANCHAUD

Bonsoir, est-ce que quelqu'un posséderait un com

20-10-2025 09:36

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for the following article:Bene

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

21-10-2025 23:13

F. JAVIER BALDA JAUREGUI

Hello to everyone.Did you think it could, be a pyx

22-10-2025 06:43

Ethan Crenson

Hi all, I'm having some difficulty with this Orbi

22-10-2025 14:45

Lukas Verboom

Dear all,I collected this in the Netherlands, on t

22-10-2025 11:13

Jean-Luc Ranger

Bonjour,  Petites boules plus ou moins sphériqu

21-10-2025 21:25

Philippe PELLICIER

Bonjour,J'ai récolté en septembre sur une litiè

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Ascomycete on bat poop in cave
Warre Van Caenegem, 24-06-2025 14:00
I'm currently in Croatia doing fieldwork that is not quite related to fungi. But in a small cave, I've found these tiny stalked cup fungi growing on individual bat poop droppings, probably from a Rhinolophus bat.
I have a very simple microscope available, without a 100x lens and I cannot make measurements currently, and no literature.

I'm just very curious what these fungi are, so I hope that the data I can provide might help to get to a genus or species.

Asci 8-spored, with simple septa (no clamp at base). Excipulum with round cells, some of these cells have brown content. Paraphyses are not very obvious, but there are several long, thicker-walled strands in here, which are multiseptated and seem to be filled with greenish/brown content (it kind of looks like a filamentous algae).

I tried to search for Literature and observations of ascomycetes on bat droppings, but I could not find something that looks like this.
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Neven Matocec, 24-06-2025 14:28
Neven Matocec
Re : Ascomycete on bat poop in cave
Dear Warre,
I am writing you officially as an member of the State project that is currently concerned on a cave fungi. Together with my colleagues we are working on a group to which member you have came accross. If you collected anything, please send us your whole collection to legalise your activity and thus making you a collaborator of our project. ANY collecting of biological material in Croatian caves IS STRICTLY PROHIBITED.

ME and my colleagues would like to continue our further conversation through the e-mail. My official address is nmatocec@irb.hr. I will write you today to establish our further communication.

Best regards,
Neven Mato?ec
Warre Van Caenegem, 24-06-2025 15:50
Re : Ascomycete on bat poop in cave
Dear Neven Matocec,

Thank you for your response. Awaiting your personal email communication, I would like to specify that I currently volunteer for Operation Wallacea, a UK-based conservation organization. Here, we are working together with BIOTA, a Croatian based conservation organization, in and around Krka National Park.

I would like to contribute to your project, and I will wait for any further instructions.

Best regards,
Warre
Neven Matocec, 24-06-2025 16:17
Neven Matocec
Re : Ascomycete on bat poop in cave
Dear Ware,
thanks for your prompt reply! Oh good! Yes, I know everthying about Operation Wallacea in Croatia, I even participated in one several years ago. Please send my regards to Dušan Jeli? if he is there :-)

We'll discuss on everything and looking forward to our future cooperation. Will write you a bit later today,

Cheers,
Neven

Hans-Otto Baral, 24-06-2025 16:36
Hans-Otto Baral
Re : Ascomycete on bat poop in cave
Difficult to tell without measurements, iodine reaction, and living features. The paraphyses surely contained VBs which now in dead state appear distorted.

The absence of croziers I would doubt a bit, it is not evident on your photos.

The excipulum could point to a Sclerotiniaceae (?), which depends on the type of amyloid apical ring of the asci.