21-01-2022 13:02
Castillo Joseba
Me mandan el material seco, recolectada en planta
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Rubén Martínez-Gil
Hola a todos. Subo unas fotos de un asco que hemo
16-01-2022 00:16
Rubén Martínez-Gil
Hola a todos.Subo unas fotos de un Ascobolus que h
20-01-2022 20:40
Enrico TomschkeHello Everybody!I Need help with this little Ascom
19-01-2022 10:25
Enrique Rubio
Hi ForumThe ascomata of this fungus grew on cortic
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William de JongHi everyone,Found on a cone of Picea abies by Fran
16-01-2022 21:25
Robin Isaksson
Spores 10-15 x 1,8-2,3um Found on apel twig today
17-01-2022 13:20
Castillo Joseba
Me mandan el materila seco, recolectado en tallo
Proliferodiscus pulveraceus ?
Ethan Crenson,
10-01-2022 17:06
Hello all,
I think I have finally found Proliferodiscus pulveraceus here in Brooklyn. The tissue turns violet in KOH. The hairs are cylindrical and encrusted. Unfortunately, my collection seems to be immature. All asci that I have seen do not contain spores. And in IKI I do not see an amyloid reaction. (Is it possible that the amyloidity could develop after the asci mature?) Is this Proliferodiscus as i suspect or should I look elsewhere (after nurturing it in a moist chamber perhaps)?
Thank you all for your help.
Ethan
Hans-Otto Baral,
10-01-2022 17:34
Re : Proliferodiscus pulveraceus ?
Yes, it is Proliferodiscus pulveraceus. This species is often immature or has only a few mature asci. The iodine reaction must be present before the spores get mature.
But there actually exist populations with inamyloid asci. E.g. in HB 6691b I did not get a reaction even after KOH-pretreatment.
Interesting would be to look for the ascus base, there exist populations with or without croziers.
Ethan Crenson,
10-01-2022 17:38
Re : Proliferodiscus pulveraceus ?
Thank you, Zotto. I will look at it again after a few days in a moist chamber with and pay particular attention to the presence of croziers.