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19-11-2025 13:04

Bruno Coué Bruno Coué

Bonjour,je  sollicite votre avis pour la récote

17-11-2025 21:46

Philippe PELLICIER

Bonjour,Récolté sur bois pourrissant de feuillu

18-11-2025 18:26

David Malloch David Malloch

I am trying to locate the article, Müller, E. 195

16-11-2025 21:09

Robin Isaksson Robin Isaksson

Anyone recognize this acc. to pictures.? Found on

18-11-2025 13:59

Nogueira Héctor

November 14, 2025 Brazuelo (León) SPAIN Hymenosc

17-11-2025 19:14

herman lambert

Apothécie discoïde 0.6 cm diam., orangeFace hymÃ

17-11-2025 21:57

Philippe PELLICIER

Bonjour,Récolté sur bois de feuillu mort dur, no

14-11-2025 16:26

Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 23:22

Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

15-11-2025 20:25

Riet van Oosten Riet van Oosten

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

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Iodophanus hyperboreus?
Lothar Krieglsteiner, 02-08-2024 10:07
Lothar Krieglsteiner.. found in the French Alps, 5.7.24, 1455 m NN, two quite large apothecia (about 2-3 mm) with beautiful rosy-pink tint growing on a very strongly decayed and water-soaked piece of wood lying in a fountain situation between mosses like Cratoneuron commutatum and Philonotis fontana, wet situation (in the surrounding nearly every habitat was fully dried out). The nitrogen-level was low which is indicated already by the mosses, and  by spermatophytes (e.g. Parnassia palustris, Pinguicula vulgaris not far away).
The sea level is perhaps a bit low, but I think I. hyperboreus should be a better choice than I. testaceus. I measured the spores with about 19-21/11,5-13 µm. My cotton blue stain was not very good working, maybe because of the very wet water-soaked material. The spores were finely warty . The paraphyses are perhaps distinctive, too - they are swollen and strongly guttulate. 
Can I. hyperboreus be confirmed or am I fully on a wrong road?
Best regards, Lothar
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  • message #79856
  • message #79856
  • message #79856
Nicolas VAN VOOREN, 02-08-2024 15:45
Nicolas VAN VOOREN
Re : Iodophanus hyperboreus?
Why not simply I. carneus? It usually grows on dungs, but on a decaying substrate it might be possible...
To my knowledge, I. hyperboreus is terrestrial and has smaller ascospores.
Lothar Krieglsteiner, 02-08-2024 15:55
Lothar Krieglsteiner
Re : Iodophanus hyperboreus?
Hello Nicolas,

thanks for your opinion.
But ....

Medardi & al. 2006 for his new species hyperboreus: Sp 18-23/10-12 µm
In his key he gives for I. carneus measures of 17-19/10-11,5 and for I. testaceus 17,5-22,5/10,5-14,5

In Prokhorov 1997 I find for I. carneus 15-20/10-12, and for I. testaceus 18-22,5/12-13,5

My measures were (I repeat): 19-21/11,5-13
.
Wood (stronly decayed) or not wood is in my eyes less important than the nitrogen situation (carenus and testaceus are known as strong nitrophytes, and so I always found them before), I. hyperboreus grows at wet (and cold - ... yes) that are nitrogen-poor. I think the ecology is more like my find than that of carneus/testaceus.

Best regards, Lothar