Accès membres

Mot de passe perdu? S'inscrire

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

13-01-2026 07:28

Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

15-01-2026 15:55

Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

15-01-2026 10:35

Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

13-01-2026 08:43

Danny Newman Danny Newman

Tricladium varicosporioides on indet. decorticate

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

13-01-2026 09:10

Danny Newman Danny Newman

Dasyscyphella chrysotexta on indet. decorticate ha

13-01-2026 10:13

Danny Newman Danny Newman

Cordieritidaceae sp. on indet. wood w/ Hypoxylon s

13-01-2026 07:14

Danny Newman Danny Newman

Neodasyscypha cerina on indet decorticate logThe S

« < 1 2 3 4 5 > »
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