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14-02-2025 23:15

Hysteropatella
Tomaz Vucko Tomaz Vucko

Hy! Last one for today.How would you identify thi

14-02-2025 21:55

Diaporthe pardalota?
Alan Smith

hello there, this host is a dead stem of Chamerion

14-02-2025 20:15

Lophiostoma nuculoides?
Tomaz Vucko Tomaz Vucko

Hello! Another species found in the same place as

14-02-2025 19:15

Lophiostoma massarioides?
Tomaz Vucko Tomaz Vucko

Hello!I am trying to identify some of the unidenti

14-02-2025 18:31

Unidentified asco on dung
Francois Guay Francois Guay

Here’s an interesting unidentified ascomycete I

14-02-2025 16:00

hymenial parasite in old Xenasmatella vaga specimen
Lothar Krieglsteiner Lothar Krieglsteiner

during a workshop on corticiaceous fungi this was

13-02-2025 07:41

Discomycetes with spherical spores
Vasileios Kaounas Vasileios Kaounas

first time I encounter it. I didn't expect to see

14-02-2025 12:57

Orange ostioles on Populus tremula bark
Gernot Friebes

Hello,we are looking for ideas regarding this pyre

14-02-2025 00:22

Coleophoma prunicola? On dead leaftips of Prunus lusitanica
Jorian Eijkelboom Jorian Eijkelboom

On 6 february 2025 i stumbled upon a leafspot on P

13-02-2025 22:39

Nitschkia confertula
Yanick BOULANGER

BonsoirPetits périthèces noirs d'environ 0.5 mm

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Mollisia on Jackrogersella multiformis
Juuso Äikäs, 12-06-2024 07:41
Yesterday I found some white Mollisias growing on stromata of Jackrogersella mulformis on a fallen Betula branch.

Asci 8-spored, croziers+, IKI+(b). The asci also had a little round guttule that caught my attention.

Paraphyses with a typical long VB, KOH+ strong yellow. Outer surface with short hairs. The excipulum seems a bit strange for a Mollisia ("Phialocephala piceae").

Spore OCI=0-1, measurements:

(8.2) 8.8 - 9.3 (9.5) × (2.2) 2.3 - 2.5 (2.6) µm
Q = (3.4) 3.5 - 4 (4.1) ; N = 8
Me = 9 × 2.4 µm ; Qe = 3.8

I'd assume this is Mollisia albogrisea / Phialocephala piceae, but the substrate seems a bit odd.
  • message #79499
  • message #79499
  • message #79499
  • message #79499
Ingo Wagner, 12-06-2024 09:30
Ingo Wagner
Re : Mollisia on Jackrogersella multiformis
Hi Juuso!

Mollisia albogrisea fits very well.

Greetings
Ingo
Juuso Äikäs, 12-06-2024 11:23
Re : Mollisia on Jackrogersella multiformis
Alright, thanks Ingo. I'll name this as that.
Ingo Wagner, 12-06-2024 23:23
Ingo Wagner
Re : Mollisia on Jackrogersella multiformis
Hi Juuso!

Here are also a picture with the "Psilachnum"-drop in fresh asci. But this is not a "must" for albogrisea.
Sorry, it is written in German, but you can see it here and in other examples:
https://asco-sonneberg.de/pages/gallery/mollisia-albogrisea-betula-130514-eh-mcol-01jj36141.php?group_id=36121&position=3

Greetings
Ingo