12-06-2026 14:50
François Freléchoux
Bonjour, Voici la brève description d'une Mollis
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
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William Slosse
Hello all,In an attempt to make a culture of a sus
11-06-2026 19:03
Nicolas VAN VOOREN
Chers membres d'Ascofrance,Le site sera placé en
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
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Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
Asco on Heracleum
Nick Aplin,
29-01-2013 22:25
I have been struggling with this little ascomycete found last week on dead Heracleum stems just above snow-level in the South of England:
Apothecia sessile to subsessile, to 0.3mm. Yellowing with age
Spores 12 - 15.1 x 4.5 - 6.1 µm mainly 1-septate in the asci, finally 2-septate at maturity
Asci tips with no reaction to iodine
Croziers presentÂ
Thank you for your ideas,
Nick
Hans-Otto Baral,
29-01-2013 23:05
Re : Asco on Heracleum
The colour looks greenish on my screen,but is it perhaps whitish in reality? It is not sure that the spores are 1-septate at maturity, I suspect they are ejected aseptate, because the ascus with septate spores has a strong apical thickeing, so this ascus is surely dead.
The excipulum sketsch shows flanks and margin? Does not look like Parorbiliopsis. Â No idea.
Zotto
The excipulum sketsch shows flanks and margin? Does not look like Parorbiliopsis. Â No idea.
Zotto
Nick Aplin,
30-01-2013 01:30
Re : Asco on Heracleum
Hi Zotto,
Thanks for your thoughts.
Yes the apothecia were whitish.
Thats interesting - It makes sense that some of the asci were dead - I kept the fungus alive for a couple of days before illustrating it.
I saw very few (none?) aseptate spores outside of the asci unless I squashed the preparation under the coverslip.
It reminded me of images I have seen of Allophyllaria, but that can't be correct with a negative iodine reaction, right?
Nick
Thanks for your thoughts.
Yes the apothecia were whitish.
Thats interesting - It makes sense that some of the asci were dead - I kept the fungus alive for a couple of days before illustrating it.
I saw very few (none?) aseptate spores outside of the asci unless I squashed the preparation under the coverslip.
It reminded me of images I have seen of Allophyllaria, but that can't be correct with a negative iodine reaction, right?
Nick
Hans-Otto Baral,
30-01-2013 08:12
Re : Asco on Heracleum
Allophylaria has a thick-walled excipulum (+/- oblita), of elongat cells. Yours seem thin-walled and +/- isodiametric.
But Allophylaria is usually deep red (hemiamyloid), thoughrarely inamyoid.
But Allophylaria is usually deep red (hemiamyloid), thoughrarely inamyoid.