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01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

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Reddish-brown waxy cup
Ethan Crenson, 10-12-2021 19:06
Hello all,

I could use some guidance on this collection from about 2 weeks ago.  On well rotted hardwood, dark reddish-brown waxy cups, 1mm or smaller.

Asci IKI-, 8-spored. They appear bitunicate in iodine, 29.5-36 x 5-5.5µm.

Spores ellipsoid, hyaline 4-4.8 x 2.3-2.6µm, biguttulate. 

I don't have much else to go on. Does anyone have some idea?

Thanks,

Ethan
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Hans-Otto Baral, 10-12-2021 20:29
Hans-Otto Baral
Re : Reddish-brown waxy cup
This is not bitunicate, many Helotiales have it, usually an apical ring is in this thickening but here not.

The ectal excipulum should be clarified and then KOH be tested if a red-brown dya extrudes (ionomidotic).
Ethan Crenson, 10-12-2021 22:21
Re : Reddish-brown waxy cup
Thank you Zotto.  No ionomidotic reaction in 10% KOH.  At the very most there was perhaps a faint yellow wash.  Here are photos of the excipulum.
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Hans-Otto Baral, 11-12-2021 10:14
Hans-Otto Baral
Re : Reddish-brown waxy cup
Hmm, there are short smooth hairs, but a Hyaloscyphaceae I do not consider. Might be an American species? But what genus? The excipulum seems a short-celled somewhat irregular texture, not angularis, not prismatica.