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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

Phacidium
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

Leptosphaeria?
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

Cladosporium ?
Pierre Repellin

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

04-11-2025 09:07

Hymenoscyphus on blueberry.
Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Protounguicularia transiens?
Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Tatraea sp. ? on Populus tremula
Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

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yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
Thomas Læssøe, 26-08-2016 14:21
± verticillate, conidia ca. 5 x 2 µm.
A very common parasite on the site. A Neonectria?

cheers

Thomas
  • message #44594
  • message #44594
  • message #44594
Jacques Fournier, 26-08-2016 14:37
Jacques Fournier
Re : yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
Hi Thomas,
I may have an answer to your question.
The greenish yellow coating is made of an acremonium-like hyphomycete, the anamorph of an undescribed Cosmospora which seems to be specific for X. polymorpha. The teleomorph is fairly easy to obtain after incubation in moist chamber. I attach a photo of the red perithecia with scattered tufts of the remaining anamorph.
Cheers,

Jacques
  • message #44596
Thomas Læssøe, 26-08-2016 15:03
Re : yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
thanks, Jacques. Seems to be the usual species, the undescribed one :-)

cheers

Thomas
Thomas Læssøe, 02-12-2020 20:36
Re : yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
still undescribed?


cheers
Jacques Fournier, 02-12-2020 21:26
Jacques Fournier
Re : yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
yes Thomas, we are getting lazy...but it is planned, one day but not this year.

Best,

Jacques
Thomas Læssøe, 03-12-2020 11:32
Re : yellowish hypho covering stromata of Xylaria polymorpha - Denmark, autumn 2015
you lazy - never! :-)