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02-08-2024 10:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. found in the French Alps, 5.7.24, 1455 m NN, tw

02-08-2024 14:30

Lothar Krieglsteiner Lothar Krieglsteiner

French Alps, 6.7.24. The asci and some gel around

02-08-2024 13:08

Lothar Krieglsteiner Lothar Krieglsteiner

.. unfortunately without a dried specimen, and unf

02-08-2024 11:22

Lothar Krieglsteiner Lothar Krieglsteiner

.. French Alps, 29.6.24. There is a H. rhododendri

01-08-2024 13:16

Lothar Krieglsteiner Lothar Krieglsteiner

.. on Alnus alnobetula, 16.7.24.When finding I fir

01-08-2024 17:34

Lothar Krieglsteiner Lothar Krieglsteiner

... found 21.6.24, growing on a very thin peace of

01-08-2024 12:33

Lothar Krieglsteiner Lothar Krieglsteiner

found 17.6.24, Italian Alps, on deciduous wood in

01-08-2024 15:43

Lothar Krieglsteiner Lothar Krieglsteiner

... 6.7.24, alpine situation (near Glacier), same

01-08-2024 15:00

Lothar Krieglsteiner Lothar Krieglsteiner

found on 26.7.2024 on Amelanchier ovalis-twig in a

01-08-2024 12:06

Miguel Ãngel Ribes Miguel Ángel Ribes

Good morningThis Hypoxylon grew erumpent on branch

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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
  • message #79856
  • 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