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23-06-2025 04:03

Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

22-06-2025 13:52

DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

26-05-2025 18:09

Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

11-06-2025 16:26

Jason Karakehian Jason Karakehian

Hi everyone, I am looking for the following protol

18-06-2025 19:24

Bernard Declercq Bernard Declercq

Good evening,On Oenanthe aquatica we collected  a

17-06-2025 14:23

Josep Torres Josep Torres

Hello.A probable Hyaloscypha from last June 1st, s

18-06-2025 16:24

Andgelo Mombert Andgelo Mombert

Bonjour,Un minuscule stade imparfait, qui pousse s

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On Rhubarb
Marja Pennanen, 20-06-2013 22:33
Seems, that determination is now just impossible for me.
Today I collected some seemingly Orbilias on rhubarb.
In microscope I saw hairs and they are visible in photos, too.
No Obbilia, but maybe some Unguiculella.

These are about 0,3-0,5 mm wide.
Spores are about 10-15x2-3 and asci 40-50x6-8, IKI-.
Paraphyses are narrow, swollen at the tips.
Hairs are about 30-40x3-4, pointed and seems glassy, but no reaction with KOH.

Raitviirs opus gave no answer to my problem: Marja
  • message #23993
  • message #23993
  • message #23993
Hans-Otto Baral, 21-06-2013 07:50
Hans-Otto Baral
Re : On Rhubarb
Hyalopeziza raripila which I have in my Iridinea folder in Naevioideae. Asci may react red but are also negative.
Marja Pennanen, 21-06-2013 09:15
Re : On Rhubarb
Thank you!
That it is, new for me and propably North Carelian :)

Shame on me, it is in Raitviir's opus: Marja