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24-02-2026 11:01

Anamorph on Tilia

Gernot Friebes

Hi,found on a branch of Tilia, with conidia measur

24-02-2026 00:21

Benoît Segerer

Hello,I'm new to this forum, I hope I won't be irr

23-02-2026 11:22

lasiosphaerioid on pine cone with small, slender spores - Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10584971

29-11-2024 21:47

Calycina heterospora

Yanick BOULANGER

BonjourJ'avais un deuxième échantillon moins mat

07-02-2023 22:28

Fracchiaea callista? on Carpinus

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Ayuda con Tarzetta sp

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Hairy disc-"Patinella sanguineoatra" like

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba

Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Diaporthe spiculosa?

Maren Kamke

Maren Kamke

Good morning, I found a Diaporthe species on Samb

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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