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14-05-2026 05:36

Lachnum subvirgineum (?)

Ethan Crenson

Hi all, I haven't paid much attention to Lachnu

11-05-2026 12:32

Hélotiale à paraphyses à exsudat brun jaunâtre

Bernard CLESSE

Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

13-05-2026 15:26

FranÃ§ois FrelÃ©choux

François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Pezizomycetes of Europe: help us to improve their knowledge

Nicolas VAN VOOREN

Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Scutellinia crinita ?

Thierry Blondelle

Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

10-05-2026 23:17

Scleromitrula (?) from decaying leaves of Fagus/Acer

Andreas Gminder

Andreas Gminder

Hello,today we found in a moist steep decidous for

28-04-2026 20:07

Marthamycetales? - from Portugal

Lothar Krieglsteiner

Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Mollisia or related genus from Portugal - with quite peculiar character

Lothar Krieglsteiner

Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Orbilia from Portugal

Lothar Krieglsteiner

Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

11-05-2026 13:22

Sylvie Le Goff

BonjourPuis avoir votre avis sur cet ascome, je vo

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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