16-03-2009 23:09
Yannick Mourgues
Bonsoir à tous. Voici une chose curieuse trouv
14-03-2009 00:20
Roland LabbéVoici une planche d'un Discomycète blanc inconnu.
11-03-2009 22:48
Hans-Otto Baral
Hi I have here a pyreno with unitunicate asci t
11-03-2009 16:58
Guy GarciaEst-ce que ça cadre pour Lentomitella cirrhosa ?
11-03-2009 00:00
Miguel Ángel Ribes
Buenas noches Tengo varias recolecciones de Lac
10-03-2009 18:59
Alain GARDIENNET
Bonsoir, Avant même d'avoir fait la micro, je v
10-03-2009 16:53
David Malloch
Collections of Unguiculariopsis reported on this f
Tiny asco on Fallopia
Camille Mertens,
03-04-2023 12:39
Collected on Fallopia end of january.
Spores slighty curved, guttulated, wrapped in a sheet : 11-12 x 3,6-3,9 µm
Ascus with croziers, IKI (-)
Branched paraphysis.
Seems to me closed to Allophylaria "petasites" on Zotto's webside illutrations.
An idea?
Best regards.
Camille
Allophylaria-sp.-bis-0001.pdf
Hans-Otto Baral,
03-04-2023 14:44
Re : Tiny asco on Fallopia
Hi Camille
that is indeed similar, although Björn measured (9-)10,3-12,4x2,6-3µm.
Your IKI I do not much trust, or you need to remove the KOH better, or even better let KOH away and show what IKI does.
The marginal excipulum doe snot look like an Allophylaria, in Björn's specimen the cells are elongate and thick-walled (gel). Did you also see VBs in the paraphyses that get red-brown in IKI by extruding red granules?
Zotto
Camille Mertens,
03-04-2023 19:43
Re : Tiny asco on Fallopia
Hi Hans
I agree this does not fit an Allophylaria.
IKI was negative. Therefore I tried KOH pretreatment.
I cannot remember a red-brown reaction in IKI.
I add a photo of paraphysis in Crb.
Many thanks.
Camille
I agree this does not fit an Allophylaria.
IKI was negative. Therefore I tried KOH pretreatment.
I cannot remember a red-brown reaction in IKI.
I add a photo of paraphysis in Crb.
Many thanks.
Camille
Hans-Otto Baral,
03-04-2023 20:25
Re : Tiny asco on Fallopia
Sorry, these paraphyses are dead, there I cannot see anything. They must be alive, best in water. Not sure how to proceed. The excipulum near the base could be helpful too.
I see a minute reactive (amyloid) ring in your ascus (KOH+IKI). But since the photo does not show any iodine colour (yellow-brown), I wonder how this would turn at higher IKI concentration.
Camille Mertens,
03-04-2023 20:39
Re : Tiny asco on Fallopia
Many thanks Hans.
Gonna try to collect new ones.
Gonna try to collect new ones.