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Yanick BOULANGERBonjourRécolté sur une brindille au fond d'un fo
Trichopeziza sulphurea
Patrice TANCHAUD,
26-01-2020 09:30
Bonjour,
On a twig of a shrub (probably ornamental). Spores 22-33 x 2-3,8 µm. Seems to be T. sulphurea usually on nettle ?
Thanks in advance.
Patrice
Hans-Otto Baral,
26-01-2020 09:53

Re : Trichopeziza sulphurea
Bonjour Patrice
indeed this looks like T. sulphurea. Indeed I have this species by 95% on Urtica and the rest on other herbs. Did you try to look at the wood anatomy? A simple break of the rotten wood might be enough: any central pith, how look the pores?
Did you check ascus IKI reaction and croziers?
Zotto
Patrice TANCHAUD,
26-01-2020 11:08
Hans-Otto Baral,
26-01-2020 11:56

Re : Trichopeziza sulphurea
o.k., so asci simple-septate and apex amyloid (it should turn red at high concentration, if your Lugol allows that.
Patrice TANCHAUD,
26-01-2020 12:44
Re : Trichopeziza sulphurea
OK, thanks.