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14-02-2025 23:15

Tomaz Vucko Tomaz Vucko

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

14-02-2025 21:55

Alan Smith

hello there, this host is a dead stem of Chamerion

14-02-2025 20:15

Tomaz Vucko Tomaz Vucko

Hello! Another species found in the same place as

14-02-2025 19:15

Tomaz Vucko Tomaz Vucko

Hello!I am trying to identify some of the unidenti

14-02-2025 18:31

Francois Guay Francois Guay

Here’s an interesting unidentified ascomycete I

14-02-2025 16:00

Lothar Krieglsteiner Lothar Krieglsteiner

during a workshop on corticiaceous fungi this was

13-02-2025 07:41

Vasileios Kaounas Vasileios Kaounas

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

14-02-2025 12:57

Gernot Friebes

Hello,we are looking for ideas regarding this pyre

14-02-2025 00:22

Jorian Eijkelboom Jorian Eijkelboom

On 6 february 2025 i stumbled upon a leafspot on P

13-02-2025 22:39

Yanick BOULANGER

BonsoirPetits périthèces noirs d'environ 0.5 mm

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Anthostomella tomicoides? => yes
Riet van Oosten, 25-03-2024 21:27
Riet van Oosten
Hello,

Found by Laurens van der Linde, March 2024 on solidago.

Is this Anthostomella tomicoides?

I used the key (1-2-17-22-23) in "Francis S.M. (1975). Anthostomella Sacc. (part I). Mycol. Pap. 139: 1-79"

- spores two celled

- spores 14-19 x 5-8 µm, strongly inequilateral

Greetings, Riet
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Jacques Fournier, 26-03-2024 09:29
Jacques Fournier
Re : Anthostomella tomicoides? on solidago
Hi Riet,
yes, very likely A. tomicoides. If so, you should find a short germ slit on the dorsal side, often best seen in KOH or Melzer's reagent.
Cheers,
Jacques.
Riet van Oosten, 26-03-2024 13:08
Riet van Oosten
Re : Anthostomella tomicoides? on solidago
Hi Jacques,
Thank you very much for your help!
I will try to find the germ slit.
Riet van Oosten, 26-03-2024 19:17
Riet van Oosten
Re : Anthostomella tomicoides? on solidago
Very difficult to get the spores into the right position. Made several attempts in KOH 3% and in Melzer's but without success.
Only one spore with something that could be the germ slit
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Jacques Fournier, 26-03-2024 20:37
Jacques Fournier
Re : Anthostomella tomicoides? on solidago
yes, typical.
Hunting germ slits may proove challenging, especially when spores preferably lay in side view because they are laterally flattened. Otherwise, it would be too easy!
Cheers,
Jacques
Riet van Oosten, 26-03-2024 21:12
Riet van Oosten
Re : Anthostomella tomicoides? on solidago
I'm so glad I found one :-)
Thank you once again Jacques!
Cheers, Riet