05-04-2026 22:46
Lothar Krieglsteiner
on wood of Ceratonia, Algarve, 3.4.2026.The color
05-04-2026 20:40
Robin Isaksson
Hi!Found i Japan on bark of Abies sp. Spores 35-4
31-03-2026 21:18
Miguel Ángel Ribes
Good evening. oes anyone have the original descrip
31-03-2026 20:57
Stefan BlaserHello everybody, I hope somebody can help me with
26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
31-03-2026 16:20
Mlcoch Patrik
Hello, Please about help with determination. On
31-03-2026 08:19
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
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).