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12-04-2026 17:56

Seeking genus for 1 – 3 septate spored asco. on herb Nepteta cataria (Mint).
Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Small dark synnemata on rotten hardwood
Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Pyrenomycete with yellow subiculum on Aralia
Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

sur feuilles de Luzula
Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Anamorph on Salix
Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Thyriothecioid anamorph on Carex elata
Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Parorbiliopsis samarae?
Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Scutellinia cf. citrina
Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 20:31

Psilachnum lateritioalbum on Phragmites australis?
Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 12:22

Unknown anamorph on Primula eliator
William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

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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
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Hans-Otto Baral, 10-01-2022 17:34
Hans-Otto Baral
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.