03-02-2026 20:44
Zetti MarioWhen I first saw this white mould on an Agaricus s
18-08-2025 15:07
Lothar Krieglsteiner
.. 20.7.25, in subarctic habital. The liverwort i
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
02-02-2026 14:55
Andgelo Mombert
Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome
02-02-2026 14:33
Andgelo Mombert
Bonjour,Sur le thalle de Peltigera praetextata, ne
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
02-02-2026 09:29
Bernard CLESSE
Bonjour à toutes et tous,Pour cette récolte de 2
01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
31-01-2026 09:17
Marc Detollenaere
Dear Forum,On decorticated wood of Castanea,I foun
Violet-brown disco on burnt ground
Yatsiuk Iryna,
14-05-2016 10:58
Hello, all,I have no idea about it.
Found in spring, on burnt ground. Fruitbodies up to 0,8 cm in diam, grey when dry, violet-brown when rehydrated, with white crusty margin. Fruitboies were dry when collected.
In IKI exuding strong violet pigment.
Numerous anchoring hyphae are present at the base.
Asci 8-spored, 10-13 um wide, length I cannot measure properly, not blueing in iodine.
Paraphyses branching, containing brown pigment, 3-5 um wide.
Spores smooth, sometimes containing one strongly refractive central guttule, 10-13.5*6.3-8.0 um.
What do you think?
Iryna
Yatsiuk Iryna,
14-05-2016 11:00
Re : Violet-brown disco on burnt ground
Excipulum
Yatsiuk Iryna,
14-05-2016 11:04
Re : Violet-brown disco on burnt ground
Ascus, paraphyses. Cross-section (in IKI, at first it turns violet, than red-brown)
Hans-Otto Baral,
14-05-2016 11:05
Re : Violet-brown disco on burnt ground
Hi Irina
do you mean extruding violet pigment in KOH or in IKI?
I am quite sure it is an operculate species.
The drops in the spores are not lipidic but gaseous (DBBs).
Zotto
do you mean extruding violet pigment in KOH or in IKI?
I am quite sure it is an operculate species.
The drops in the spores are not lipidic but gaseous (DBBs).
Zotto
Yatsiuk Iryna,
14-05-2016 11:14
Re : Violet-brown disco on burnt ground
Dear Zotto,
I mean in IKI. I noticed it when in checked asci for IKI-reaction. I haven't studied it in KOH. In water it didn't show this strong violet colour.
Thank you for notice about drops, is it not valuable feature than?
Best regards,
Iryna
I mean in IKI. I noticed it when in checked asci for IKI-reaction. I haven't studied it in KOH. In water it didn't show this strong violet colour.
Thank you for notice about drops, is it not valuable feature than?
Best regards,
Iryna
Nicolas VAN VOOREN,
14-05-2016 11:17
Re : Violet-brown disco on burnt ground
Maybe a Pseudombrophila species...
Yatsiuk Iryna,
14-05-2016 11:18
Re : Violet-brown disco on burnt ground
I thought about Greletia species first, but paraphyses seems not fit.
Best regards,
Iryna
Best regards,
Iryna
Yatsiuk Iryna,
14-05-2016 11:22
Re : Violet-brown disco on burnt ground
Thank you for the idea, Nicolas, I'll check keys for Pseudombrophila.
Iryna
Iryna
Hans-Otto Baral,
14-05-2016 11:52
Re : Violet-brown disco on burnt ground
The presence of DBBs strongly depend upon the method. You never see them in fresh samples because they are absent there. Obviously you rehydrated herbarium material.
Also when you add Melzer or cottonblue/lactic acid to a fresh sample you will get DBBs (some kind of vacuum) because water is extracted from the spores.
Also when you add Melzer or cottonblue/lactic acid to a fresh sample you will get DBBs (some kind of vacuum) because water is extracted from the spores.
Yatsiuk Iryna,
16-05-2016 11:45
Re : Violet-brown disco on burnt ground
Thank you, Zotto,
Fruitbodies were collected already in the dead state.
Best regards,
Iryna
Fruitbodies were collected already in the dead state.
Best regards,
Iryna