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24-12-2025 17:08

Hulda Caroline Holte

Hello, I have found this propoloid ascomycete on

24-12-2025 18:12

Ethan Crenson

Hello all, A friend found this Orbilia growing on

23-12-2025 11:27

Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Mirek Gryc

Hi. „I doubt it is possible to identify this ti

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

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Yellow-brown cup with ionomidotic reaction
Ethan Crenson, 14-11-2021 15:59
Hello all,

Found recently in New York.  These small, 1mm diameter max., apothecia exude red pigment in KOH.

Asci 35-42 x 4-5µm, IKI-, croziers present.

Spores bi-guttulate, 4.8-7 x 1.3-2µm.

Paraphyses narrow, not broadening near the tip.
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Hans-Otto Baral, 14-11-2021 16:51
Hans-Otto Baral
Re : Yellow-brown cup with ionomidotic reaction
In earlier times thos was the ochre-yellow form of Ionomidotis fulvotingens. Since DNA exists, it is a species very different from that. But until now, no name could be found in the literature, although the species is not really rare.

In my folder "Ionomidotis aff., fulvotingens" you can find it.

I would be glad to know the collection data and the substrate.
Ethan Crenson, 15-11-2021 17:20
Re : Yellow-brown cup with ionomidotic reaction
Thank you!  I made this collection at Untermyer Gardens in Yonkers, New York...  Lat: 40.965233

Lon: -73.888222

The substrate is hardwood, but I'm not really able to say more. 
Hans-Otto Baral, 15-11-2021 17:50
Hans-Otto Baral
Re : Yellow-brown cup with ionomidotic reaction
o.k., and is there a collection date?
Ethan Crenson, 15-11-2021 17:52
Re : Yellow-brown cup with ionomidotic reaction
Oh, yes ... 6 Nov 2021