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Mot de passe perdu?

18-07-2025 23:03

Help with some conidia.

Josep Torres

Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Una para ID 833

Castillo Joseba

Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Sphaerulina cornicola versus Septoria cornina

Bernard Declercq

Bernard Declercq

Hello,I have trouble distinguishing above mention

14-07-2025 11:20

Une hélotiale sur Sphagnum palustre

Michel Hairaud

Michel Hairaud

Bonjour, Voici une espèce de (?) Hyaloscyphace

15-07-2025 13:27

literature request

Angel Pintos

Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Troposporella fumosum => Troposporella monilipes

Riet van Oosten

Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Hypoxylon cf ticinense

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Jackrogersella minutella VS Hypoxylon cohaerens var. microsporum

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Olla aff. millepunctata (croziers +) on Rubus idaeus

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Rutstroemia ulmariae(?) on Saxifraga rotundifolia

Gernot Friebes

Hi,do you think this collection could be R. ulmari

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