28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
01-03-2026 14:10
Antonio Couceiro
Hola, me gustaria conocer opiniones sobre este tem
01-03-2026 18:46
Robin Isaksson
Hi! This species i se from time to time in the
01-03-2026 08:55
Michel Hairaud
Bonjour , Je souhaiterais recevoir cet article :Â
01-03-2026 15:31
Csaba Németh
Hello!I found these apothecia on Homalothecium lue
01-03-2026 17:51
Bruno Coué
Bonjour,sur vieilles crottes de sanglier en chambr
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.