08-05-2019 17:28
Edvin Johannesen
These small, black cushions were collected on a th
07-05-2019 21:54
Alain GARDIENNET
Has anybody of you ever met this amazing pycnidial
08-05-2019 07:36
Zuzana Sochorová (Egertová)
Hello,could someone send me this thesis, please?La
03-05-2019 10:16
Zeljko TomicDear colleagues, this is something that I have not
04-05-2019 22:16
Riet van Oosten
Hello, Found by Willy Heimeriks on 27-04-2019, Th
05-05-2019 23:28
Lieve Deceuninck
BonjourJe vous présente une Scutellinia qui est c
06-05-2019 17:43
Eduard OsieckThis Pyrenochaete collection comes from Urtica.Set
04-05-2019 19:30
Eduard OsieckIs Phoma piskorzii still considered the anamorph s
Black acervuli with strange brown "phragmo"conidia
Edvin Johannesen,
08-05-2019 17:28
These small, black cushions were collected on a thin twig (presumabley deciduous). Very strange conidia appeared under the microscope (in KOH). The septa appear to be wavy, partly transversal, partly longitudinal, so possibly muriform. Some have a hyaline, apical appendage/pedicel-like structure at one end. In phase contrast a slimy (gelatinous) matrix becomes evident. Are genera like Coryneum or Seiridium possibilities or am I on the wrong track? Suggestions appreciated. Thanks!
Lothar Krieglsteiner,
08-05-2019 17:43
Re : Black acervuli with strange brown "phragmo"conidia
Hello Edvin,
whatever fungus this could be - the "conidia" you show appear as strongly collapsed to me - likely due to age.
They could also be ascospores with the asci already faded (?).
Yours, Lothar
Edvin Johannesen,
08-05-2019 17:54
Re : Black acervuli with strange brown "phragmo"conidia
Thanks, Lothar. In fact, it was collected a months ago and it was studied without drying, but of course, the fungus may have "wintered". It looks pretty fresh, though. I doubt they are ascospores, since several have the appendage (although I guess that doesn't totally rule out ascospores).