Accès membres

Mot de passe perdu?

12-11-2025 21:47

sp en restos de poda

ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil

Viktorie Halasu

Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf

Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.

Josep Torres

Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Allophylaria subliciformis?

Francois Guay

Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres

Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Mollisia sur Pinus

Michel Hairaud

Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Hymenoscyphus sp?

Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

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likely out of topic - anamorph of Botryobasidium?

Lothar Krieglsteiner, 29-11-2019 12:56

Lothar Krieglsteiner

... collected in the National Park of Eifel, Germany, 13.11.19, on very freshly fallen log of Fagus sylvatica, on the bark (iniatial phase), abundantly growing.

The conidia are very variable in size, about (12)14-18(21)/(7,5)9-13(17) µm, the hyphae are about 14-18 µm broad, at the clavate ends up to 23 µm.

I think of an anamorph of Botryobasidium, but I do not clearly get to a species. Does somebody?

Best regards, Lothar

Eduard Osieck, 29-11-2019 15:53

Re : likely out of topic - anamorph of Botryobasidium?

Could be “out-of-topic” indeed: this reminds me of the algae Trentepohlia which forms extensive orange mats on tree trunks like Pinus sylvestris.
See for instance: http://www.bioref.lastdragon.org/Chlorophyta/Trentepohlia.html
Eduard

Lothar Krieglsteiner, 29-11-2019 15:56

Lothar Krieglsteiner

Re : likely out of topic - anamorph of Botryobasidium?

Hello Eduard,

thank you for your proposal.

But - I do not believe this. I saw Trentepohlia often, on rocks and on wood also. I am sure this is a fungus.

Best regards, Lothar

Thorben Hülsewig, 29-11-2019 16:24

Re : likely out of topic - anamorph of Botryobasidium?

Hi Lothar,

compare with Nematogonum ferrugineum.

Viele Grüße,
Thorben

Lothar Krieglsteiner, 29-11-2019 16:33

Lothar Krieglsteiner

not out of topic - Nematogonum ferrugineum

Hallo Thorben,

fantastisch - das scheint sehr gut zu passen.

Ich habe mich hier informiert:

http://www.ascofrance.com/forum/13380/asco-sur-fagus

Wenn ich es richtig verstanden habe, handelt es sich um einen Parasiten auf Neonectria-Arten. In der Nähe sah ich N. coccinea (oder was ich dafür halte), insofern passt es vorzüglich, natürlich auch bezüglich der makro- und mikroskopischen Merkmale.

Nochmals danke und herzliche Grüße

Lothar