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28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

01-07-2025 23:37

Help with a Pleosporal.
Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

hymenoscyphus albidus
Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

03-07-2025 20:08

Yellowish asco on submerged Larix needles
Francois Guay Francois Guay

I found this interesting yellowish asco growing on

03-07-2025 18:40

Melampsora ??? en Salix
Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

02-07-2025 18:45

Sur Osmunda regalis
Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Searching of a paper from The Mycologist
Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Septoria on Impatiens glandulifera
Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 12:09

Black erumpent on Populus (Ascodichaenaceae?)
Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Pezizales --Pyronema?
Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

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Rutstroemia ?
Patrice TANCHAUD, 27-10-2015 12:16
Bonjour,

récolte réalisée sur une branchette (je crois) au sol, sur un chemin en forêt de feuillus. Apothécie 3 mm. Asques 140 µm en moyenne, spores 15-17,5 x 4,5-5,5 µm.
I see Rutstroemia ulmariae ... ou serait-ce tout simplement R. firma ?
Merci d'avance pour vos avis, j'ai une seule apothécie, je n'ai pas encore regardé la textura.

Harvesting on a twig (I think) on the ground, on a deciduous forest on the way. Apothecium 3 mm. Asci 140 µm on average, spores 15-17,5 x 4,5-5,5 µm.
I see Rutstroemia ulmariae ... or is it simply R. firma ?
Thank you in advance for your advice, I have one apothecium, I have not watched the textura.

Patrice
Hans-Otto Baral, 27-10-2015 12:49
Hans-Otto Baral
Re : Rutstroemia ?
The twig looks to me like Quercus, can it be? You should see that when looking at the pores of the wood.

R. firma has either straight or curved spores, I never understood why.
Patrice TANCHAUD, 27-10-2015 13:13
Re : Rutstroemia ?
Quercus is possible where I was. Straight or curved spores for R. firma, then this is perfect, but if you do not know why, me neither ...
Thanks very much.

Patrice