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02-08-2025 12:35

Hymenoscyphus albidus ?
éric ROMERO éric ROMERO

Bonjour tous, J'ai trouvé sur pétiole de Fraxin

02-08-2025 17:21

Pleomassaria protrusa description
Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche la description et la planche

30-07-2025 20:52

apo on Pteridium aquilinum
Bohan Jia

Hi together,  I've been looking posts in AscoFra

30-07-2025 10:12

Asco1 sur crotte de mouton
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

31-07-2025 16:32

Carbophilous discomycete - Anthracobia pseudorehmii?
Andreas Gminder Andreas Gminder

Dear collegues,today I found on a very fresh fire

30-07-2025 18:06

Orbilia dryadum?
Stefan Jakobsson

On a decorticated twig of Alnus incana on moist so

29-07-2025 18:59

Ayuda con esta
Castillo Joseba Castillo Joseba

Me mandan el  material seco de Galicia, España,

28-07-2025 12:34

Capronia
Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

28-07-2025 04:59

identification?
Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

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Hysterioid ? growing on pyrenomycete
Ethan Crenson, 24-01-2018 19:58
In New York City, a friend found these clusters of tiny globose fruiting bodies - none larger than .2mm in diameter.  They appear to be growing on an old pyrenomycete, possibly Jackrogersella multiformis.  I thought they were reminiscent of Anteaglonium species (I encounter A. globosum and A. parvulum in New York).  However, the spores are brown didymospores, measuring about 11.8 - 12.3 by 4.5 - 5µm. Asci are about 55 - 60 by 7.5µm.  Any ideas?  I have read in Boehm et al. (2009) of the monotypic genus Actidiographium with "pigmented one-septate ascospores", but I can't find much information other than that.
Thanks in advance!
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Gernot Friebes, 24-01-2018 20:04
Re : Hysterioid ? growing on pyrenomycete
This could be Immotthia atrograna.

Best wishes,
Gernot
Ethan Crenson, 27-01-2018 01:21
Re : Hysterioid ? growing on pyrenomycete
Thank you Gernot!  I think that's it!
Andrew N. Miller, 27-01-2018 16:09
Andrew N. Miller
Re : Hysterioid ? growing on pyrenomycete
What about Immothia hypoxylon since it is growing on an old species of Hypoxylon?

Andy
Gernot Friebes, 27-01-2018 17:46
Re : Hysterioid ? growing on pyrenomycete
Immotthia hypoxylon is a synonym of I. atrograna according to Jaklitsch et al.: https://www.zobodat.at/pdf/OestZPilz_11_0093-0106.pdf

Best wishes,
Gernot
Andrew N. Miller, 27-01-2018 18:00
Andrew N. Miller
Re : Hysterioid ? growing on pyrenomycete
Ah, good to know.  Thanks!  How does anyone keep up with taxonomic names changes these days?  ;o)

Andy
Ethan Crenson, 08-02-2018 02:14
Re : Hysterioid ? growing on pyrenomycete
This past weekend in a park at the opposite end of NYC I found what looked like Immotthia atrograna.  Again, tiny clusters of black globose fruiting bodies growing on the stromata of some sort of Hypoxylon.  But this time rather than asci and brown didymospores, I found an anamorph with light brown unseptate conidia with (usually) two oil droplets, measuring (6) 7.5 - 9 (12) by 4 - 4.5?m.  But this is just the anamorph of I. atrograna, is it not?
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Gernot Friebes, 08-02-2018 08:21
Re : Hysterioid ? growing on pyrenomycete
Yes, it looks very much like it.

Best wishes,
Gernot