27-11-2025 12:01
Thomas Læssøehttps://svampe.databasen.org/observations/10496727
27-11-2025 11:46
Thomas Læssøehttps://svampe.databasen.org/observations/10493918
17-09-2025 10:50
Heather MerryleesHi there!I am hoping for any advice on the identif
29-11-2025 08:40
Andreas Millinger
Hello,on a splintered part of a branch on the grou
28-11-2025 16:45
Nogueira HéctorNovember 23, 2025 Requejo de Sanabria (León) SPAI
25-11-2025 14:24
Thomas Læssøehttps://svampe.databasen.org/observations/10490522
27-11-2025 15:41
Thomas LæssøeSpores brownish, typically 4-celled; 26.8 x 2.4;
27-11-2025 11:31
Thomas LæssøeCollectors notes: Immersed ascomata, erumpent thro
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
26-11-2025 18:13
Jason Karakehian
The entire run of Mycotaxon is now available throu
Rose-coloured pyrenos on Cirsium
Juuso Äikäs,
08-08-2023 14:07
The asci are 8-spored and IKI negative. The spores are mostly 2-celled and measure 13.6 - 20.4 × 4.1 - 4.8 µm.
Maybe this is something in Nectriaceae, or something close to that?
Andgelo Mombert,
08-08-2023 15:06
Re : Rose-coloured pyrenos on Cirsium
Bonjour,
Je pense qu'il s'agit d'un Hydropisphaera. Il y a une clé de Lechat et Fournier dans la revue Ascomycete.org.
Dans le bleu coton, les spores sont ornementées ?
Je pense qu'il s'agit d'un Hydropisphaera. Il y a une clé de Lechat et Fournier dans la revue Ascomycete.org.
Dans le bleu coton, les spores sont ornementées ?
Juuso Äikäs,
08-08-2023 17:36
Re : Rose-coloured pyrenos on Cirsium
Thanks for the reply. I found the paper, and the closest fit might be H. cirsii. The name sounds promising, and the substrate of my collection might very well be Cirsium arvense, like mentioned in the paper.
However, that species should have hairs, and the spores should be finely spinulose (although they did look rather smooth in the pic). My collection seems to have smooth spores in CB (I can't rule out some very fine ornamentation). The spore shape and measurements would be fairly close, as would the size and color of the perithecia.
Maybe I'll name this just Hydropisphaera sp.
However, that species should have hairs, and the spores should be finely spinulose (although they did look rather smooth in the pic). My collection seems to have smooth spores in CB (I can't rule out some very fine ornamentation). The spore shape and measurements would be fairly close, as would the size and color of the perithecia.
Maybe I'll name this just Hydropisphaera sp.
Nick Aplin,
19-08-2023 21:18
Re : Rose-coloured pyrenos on Cirsium
Sorry for the late comment - Might it also be worth comparing this collection to Nectriella dacrymycella?
Regards,
Nick
Regards,
Nick