27-08-2024 19:03
B Shelbourne
I found some Hymenoscyphus-like apothecia on cupul
27-08-2024 17:12
Zuzana Sochorová (Egertová)
Hello,I would like to consult this little Peziza,
26-08-2024 16:30
Zuzana Sochorová (Egertová)
Hello,yesterday I collected this Phaeohelotium on
22-08-2024 17:59
Edvin Johannesen
Hi!I just wonder if Peziza badia can exude plenty
20-08-2024 23:32
Alden DirksAny ideas on what this Leotiomycetes growing on Ph
21-08-2024 17:40
dit JERRY (Joseph-Ernest) THORNBonjour,Ce petit champignon vert a été récolté
18-08-2024 14:08
Pablo ChacónHola. De vuelta con otra Genea. . Llego a Pseudove
18-08-2024 23:25
Patrice TANCHAUDBonjour, récolte réalisée en décembre sur feu
16-08-2024 14:04
Viktorie Halasu
Hello, for the first time I've collected a Mollis
Calycina conorum
Yannick Mourgues,
01-02-2008 23:49
Bonsoir.J'ai observé que Calycina conorum rougissait fortement à la blessure. Est-ce que l'un d'entre vous saurait pourquoi ? Quelle est la réaction chimique responsable de cela ?
I have watched that Calycina conorum becomes strongly reddening when hurted. Do you know why ? What is the chemical process ?
Merci par avance.
Yannick
Perz Piotr,
02-02-2008 09:39
Re:Calycina conorum
Hi Yannick
I thint this is oxidation of VBs i paraphyses, marginal- & excipulum cells.
Pimpek
I thint this is oxidation of VBs i paraphyses, marginal- & excipulum cells.
Pimpek
Hans-Otto Baral,
02-02-2008 11:38
Re:Calycina conorum
Yes, it is a wide-spread property in Helotiales and always the result of oxidation of refractive vacuoles. Typical of Lachnum, Bryoscyphus, some of Calycina etc. I think it has to do with benzol rings in which the double bindings change through oxidation and therefore get coloured. It is always a lethal process so that redbrown paraphysis or hair cells are never coloured as long as they are alive.
We have so important vital characters like VBs and we know so little about thier chemical background. It would be an interesting field of research for chemistry.
Zotto
We have so important vital characters like VBs and we know so little about thier chemical background. It would be an interesting field of research for chemistry.
Zotto